First of all, Sly reiterated to Mortensen that he manufactured the entire story and confirmed that he was only employed at the clinic in 2013, two years after Manning was a patient.
As to why Sly made up the allegations about Manning and other athletes, this is where it gets confusing. It starts with the undercover reporter used by Al Jazeera, Liam Collins.
Collins, a former hurdler for Great Britain, spoke with Sly, and others, under the guise of an older athlete (he is 38) looking for something to help him reclaim his top form. According Mortensen, Sly was looking to get into the athlete supplement business and, through some mutual contacts, met with Collins believing he could help Sly contact top soccer players in the English Premier League.
"[Sly] wanted to get into the supplementation business and [Collins] had told [Sly] that there were a lot of prominent Premier League athletes, soccer players, that he could bring business to Sly and some other people he was working with," Mortensen said on ESPN Radio.
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Former intern at center of the Peyton Manning-HGH scandal explains why he made it all up
PITTSBURGH, PA - DECEMBER 20: Peyton Manning (18) of the Denver Broncos watches the action from the sidelines against the Pittsburgh Steelers during the first half of play at Heinz Field. The Pittsburgh Steelers hosted the Denver Broncos on Sunday, December 20, 2015. (Photo by AAron Ontiveroz/The Denver Post via Getty Images)
GREEN BAY, WI - DECEMBER 28: Mike Neal #96 of the Green Bay Packers looks to the sidelines during the game against the Detroit Lions at Lambeau Field on December 28, 2014 in Green Bay, Wisconsin. The Packers defeated the Lions 30-20. (Photo by Leon Halip/Getty Images)
DETROIT, MI - DECEMBER 3: Inside linebacker Clay Matthews #52 of the Green Bay Packers walks out to the field prior to playing the Detroit Lions at Ford Field on December 3, 2015 in Detroit, Michigan. (Photo by Andrew Weber/Getty Images)
CHARLOTTE, NC - NOVEMBER 8: Julius Peppers #56 of the Green Bay Packers looks on during a NFL game against the Carolina Panthers at Bank Of America Stadium on November 8, 2015 in Charlotte, North Carolina. (Photo by Ronald C. Modra/Sports Imagery/Getty Images)
PITTSBURGH, PA - NOVEMBER 08: James Harrison #92 of the Pittsburgh Steelers walks onto the field before the start of the game against the Oakland Raiders at Heinz Field on November 8, 2015 in Pittsburgh, Pennsylvania. (Photo by Justin K. Aller/Getty Images)
PORT ST. LUCIE, FL - FEBRUARY 26: RY 26: ARY 26: Taylor Teagarden #23 of the New York Mets poses for a portrait during Spring Training photo day at Tradition Field on February 26, 2014 in Port St. Lucie, Florida. (Photo by Chris Trotman/Getty Images)
PHOENIX, AZ - AUGUST 12: Ryan Howard #6 of the Philadelphia Phillies in the dugout during the MLB game against the Arizona Diamondbacks at Chase Field on August 12, 2015 in Phoenix, Arizona. The Phillies defeated the Diamondbacks 7-6. (Photo by Christian Petersen/Getty Images)
ATLANTA, GA - SEPTEMBER 29: Third baseman Ryan Zimmerman #11 of the Washington Nationals sits in the dugout during the game against the Atlanta Braves at Turner Field on September 29, 2015 in Atlanta, Georgia. (Photo by Mike Zarrilli/Getty Images)
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However, prior to going undercover for Al Jazeera — and after a stint as a dancer on "Britain's Got Talent" — Collins was caught in a scandal of his own in which he was accused of duping investors out of more than $1 million in a real estate scheme.
This may have led to Sly not trusting Collins as a potential business associate.
"He really attacked Liam Collins, who was the guy who secretly taped him," Mortensen continued. "I asked, 'Well, why would you do that?' He said, 'I was trying to test him and press him, see if he would steal my information, because that is what he did with his investors over in Great Britain'
"He said he wanted to throw out different names, and whether they were treated at the Guyer Institute," Mortensen continued. "He said he was trying to use different names to test this guy's knowledge, Liam Collins' knowledge, on players. and he tried to change up each story with each guy just to see if this guy would try to gather any more information."
As for why he used Manning's name even though he was no longer a patient at the clinic at the time Sly was employed there, Sly says he simply learned that Manning had been a patient there through other employees.
"I said, 'How did you come up with this story of Peyton and Ashley Manning?,'" Mortensen said. "And he said, 'Well, when I was working there for those three months, somebody said that they used to be patients there.'"
Sly also says he never saw any documentation to support what he had said about Manning.
Sly's story still doesn't clear up the picture completely, with Mortensen saying that despite emails, phone conversations, and forwarded text messages, he "still can't put that puzzle together."
However, it sounds like Sly wanted to get into the athlete supplement business. He thought he had one potential client in Collins, and that this one athlete might be able to hook Sly up with some big-name soccer players. Sly then may have thrown out the names of big American athletes to either up his street cred or to test Collins (or maybe both). Sly may have used the names of athletes known to have been clients at the Guyer Clinic in case Collins tried to verify the stories, only instead of taking the info to soccer players in England, Collins took the secret tape recordings to Al Jazeera.
If this is indeed how the situation played out, it sounds like Peyton and his wife got caught in the middle simply because one overzealous former employee either oversold his own accomplishments in the business or just didn't trust a potential business associate who has a checkered financial history.
And if so, it is easy to understand why Manning is so upset.
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Detroit Lions fullback Jed Collins (45) is grabbed in the face mask by Dallas Cowboys outside linebacker Bruce Carter (54) during the first half of an NFL wildcard playoff football game, Sunday, Jan. 4, 2015, in Arlington, Texas. (AP Photo/Brandon Wade)
New England Patriots strong safety Malcolm Butler (21) intercepts a pass intended for Seattle Seahawks wide receiver Ricardo Lockette (83) during the second half of NFL Super Bowl XLIX football game Sunday, Feb. 1, 2015, in Glendale, Ariz. (AP Photo/Kathy Willens)
Sergio Brown #38 of the Jacksonville Jaguars takes the field prior to a preseason game against the Pittsburgh Steelers at EverBank Field on August 14, 2015 in Jacksonville, Florida. (Photo by Stacy Revere/Getty Images)
Odell Beckham #13 of the New York Giants catches a touchdown in front of Jairus Byrd #31 of the New Orleans Saints during the third quarter of a game at the Mercedes-Benz Superdome on November 1, 2015 in New Orleans, Louisiana. (Photo by Sean Gardner/Getty Images)
PHILADELPHIA, PA - SEPTEMBER 20: DeMarco Murray #29 of the Philadelphia Eagles leaps over Brandon Carr #39 of the Dallas Cowboys in the third quarter on September 20, 2014 at Lincoln Financial Field in Philadelphia, Pennsylvania.The Dallas Cowboys defeated the Philadelphia Eagles 20-10. (Photo by Elsa/Getty Images)
ORCHARD PARK, NY - SEPTEMBER 20: Julian Edelman #11 of the New England Patriots scores a touchdown during NFL game action as Aaron Williams #23 of the Buffalo Bills tries to make the tackle at Ralph Wilson Stadium on September 20, 2015 in Orchard Park, New York. (Photo by Tom Szczerbowski/Getty Images)
GLENDALE, AZ - FEBRUARY 01: Jermaine Kearse #15 of the Seattle Seahawks makes a catch against Malcolm Butler #21 of the New England Patriots in the fourth quarter during Super Bowl XLIX at University of Phoenix Stadium on February 1, 2015 in Glendale, Arizona. (Photo by Mike Ehrmann/Getty Images)
OAKLAND, CA - AUGUST 30: Taiwan Jones #22 of the Oakland Raiders tries to catch the ball in the endzone while covered by Chris Clemons #29 of the Arizona Cardinals at O.co Coliseum on August 30, 2015 in Oakland, California. The play was called back for a penalty and did not count. (Photo by Ezra Shaw/Getty Images)
ST. LOUIS, MO - SEPTEMBER 27: Antonio Brown #84 of the Pittsburgh Steelers is tackled by Janoris Jenkins #21 of the St. Louis Rams after making a catch in the first quarter at the Edward Jones Dome on September 27, 2015 in St. Louis, Missouri. (Photo by Dilip Vishwanat/Getty Images)
Washington Redskins wide receiver Rashad Ross (19) tries to make the catch as Atlanta Falcons cornerback Robert Alford (23) defends during the second half of an NFL football game, Sunday, Oct. 11, 2015, in Atlanta. (AP Photo/Brynn Anderson)
PITTSBURGH, PA - DECEMBER 6: Jesse James #81 of the Pittsburgh Steelers is tackled by Darius Butler #20 (not pictured) of the Indianapolis Colts as Mike Adams #29 of the Indianapolis Colts defends in the first quarter of the game at Heinz Field on December 6, 2015 in Pittsburgh, Pennsylvania. (Photo by Justin Aller/Getty Images)
GREEN BAY, WI - OCTOBER 11: Ty Montgomery #88 of the Green Bay Packers does the 'Lambeau Leap' after running in a 31 yard touchdown against the St. Louis Rams in the first quarter at Lambeau Field on October 11, 2015 in Green Bay, Wisconsin. (Photo by Jonathan Daniel/Getty Images)
SEATTLE, WA - JANUARY 18: The Green Bay Packers huddle in the fourth quarter of the 2015 NFC Championship game against the Seattle Seahawks at CenturyLink Field on January 18, 2015 in Seattle, Washington. (Photo by Ronald Martinez/Getty Images)
LANDOVER, MD - NOVEMBER 15: The Washington Redskins are introduced before playing the New Orleans Saints at FedExField on November 15, 2015 in Landover, Maryland. The Washington Redskins won, 47-14. (Photo by Patrick Smith/Getty Images)
TAMPA, FL - NOVEMBER 08: Jameis Winston #3 of the Tampa Bay Buccaneers drops back during a game against the New York Giants at Raymond James Stadium on November 8, 2015 in Tampa, Florida. (Photo by Mike Ehrmann/Getty Images)
DETROIT MI - DECEMBER 3: Richard Rodgers #82 of the Green Bay Packers catches a fourth quarter touchdown to win the game 27-23 over the Detroit Lions on December 3 2015 at Ford Field in Detroit, Michigan. (Photo by Leon Halip/Getty Images)
NEW ORLEANS, LA - OCTOBER 15: Benjamin Watson #82 of the New Orleans Saints scores a touchdown during the third quarter of a game against the Atlanta Falcons at the Mercedes-Benz Superdome on October 15, 2015 in New Orleans, Louisiana. (Photo by Chris Graythen/Getty Images)
EAST RUTHERFORD, NJ - NOVEMBER 08: Brandon Marshall #15 of the New York Jets attempts to catch a pass under pressure from Telvin Smith #50 and Johnathan Cyprien #37 of the Jacksonville Jaguars during the second quarter at MetLife Stadium on November 8, 2015 in East Rutherford, New Jersey. (Photo by Al Bello/Getty Images)
CLEVELAND, OH - OCTOBER 18: Strong safety David Bruton #30 of the Denver Broncos and tight end Gary Barnidge #82 of the Cleveland Browns fight for a last second throw into the end zone to end the first half at FirstEnergy Stadium on October 18, 2015 in Cleveland, Ohio. (Photo by Jason Miller/Getty Images)
ARLINGTON, TX - OCTOBER 11: Wide receiver Julian Edelman #11 of the New England Patriots dives into the endzone to score on a 59 yard touchdown reception against the Dallas Cowboys during the second half of the NFL game at AT&T Stadium on October 11, 2015 in Arlington, Texas. (Photo by Christian Petersen/Getty Images)
Houston Texans wide receiver DeAndre Hopkins (10) tries to pull in a pass in front of New Orleans Saints cornerback Keenan Lewis (21) in the first half of a preseason NFL football game in New Orleans, Sunday, Aug. 30, 2015. (AP Photo/Jonathan Bachman)
New England Patriots' Tom Brady (12) is sacked by Dallas Cowboys' Greg Hardy (76) and Rolando McClain during the first quarter of an NFL football game, Sunday, Oct. 11, 2015, in Arlington, Texas. (AP Photo/Brandon Wade)
Chicago Bears running back Matt Forte is mobbed by Kansas City Chiefs players during the second half of an NFL football game in Kansas City, Mo., Sunday, Oct. 11, 2015. (AP Photo/Charlie Riedel)
San Diego Chargers wide receiver Malcom Floyd (80) pulls in a touchdown pass despite interference from Baltimore Ravens cornerback Lardarius Webb (21) during the first half of an NFL football game in Baltimore, Sunday, Nov. 1, 2015. (AP Photo/Nick Wass)
Miami Dolphins running back Jay Ajayi (23) dives past Buffalo Bills' Duke Williams (27) during the second half of an NFL football game Sunday, Nov. 8, 2015, in Orchard Park, N.Y. (AP Photo/Bill Wippert)
New Orleans Saints wide receiver Willie Snead (83) fumbles as he is hit by New York Giants cornerback Dominique Rodgers-Cromartie (41) in the second half of an NFL football game in New Orleans, Sunday, Nov. 1, 2015. The fumble resulted in a touchdown return for the Giants. (AP Photo/Butch Dill)
Cleveland Browns quarterback Johnny Manziel (2) is tackled by the face mask by Pittsburgh Steelers outside linebacker Arthur Moats (55) in the second quarter of an NFL football game, Sunday, Nov. 15, 2015, in Pittsburgh. Moats was penalized on the play. (AP Photo/Don Wright)
Dallas Cowboys kicker Dan Bailey (5) celebrates with his teammates after kicking the game-winning field goal during the second half of an NFL football game against the Washington Redskins in Landover, Md., Monday, Dec. 7, 2015. The Cowboy defeated the Redskins 19-16. (AP Photo/Alex Brandon)
GLENDALE, AZ - FEBRUARY 01: Tom Brady #12 of the New England Patriots is surrounded by the media after defeating the Seattle Seahawks 28-24 during Super Bowl XLIX at University of Phoenix Stadium on February 1, 2015 in Glendale, Arizona. (Photo by Tom Pennington/Getty Images)