'Dancing With the Stars' causes fan frenzy with shocking elimination

(Spoiler alert: Don't read on if you have not watched Monday's episode of "Dancing With the Stars")

And then there were three.

The race for the 21st Mirror Ball Trophy is down to the wire as "Dancing With the Stars" began its two-night finale on Monday.

See some of the best moments from this season:

But despite two consecutive weeks of earning perfect scores, Big Time Rush singer Carlos PenaVega and his partner, Witney Carson, were ousted from the competition.

Carlos' final dance before he was eliminated:

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"Well, first of all I thank God for this opportunity because it has been life-changing," he told co-host Tom Bergeron on air.

That left just teenage conservationist Bindi Irwin, former Backstreet Boy Nick Carter and U.S. National Army guardsman Alek Skarlatos competing for the top prize in the season-ending show on Tuesday.

Some fans reacted with horror to PenaVega's elimination.

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The frontrunner clearly seems to be Irwin, who performed a contemporary freestyle with partner Derek Hough that honored her late father, Steve "Crocodile Hunter" Irwin.

Watch Bindi's "Footprints in the Sand" dance that earned her a perfect score:

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And Carter and partner Sharna Burgess roused the crowd with a group dance to "Larger Than Life," his 1999 hit song with the Backstreet Boys.

It is hard to compete with a '90s boy band star in his element ... watch Nick Carter's dance below:

But there seemed to be a lot of online hostility toward Skarlatos, the 23-year-old U.S. serviceman who helped subdue a gunman on a French train. His dances with pro Lindsay Arnold — they were the only couple to not receive perfect scores from the judges on Monday — had some fans scratching their heads.

Watch our 6-second recap below:

Alek's dance that did not earn him a perfect score ... the only one of the night:

Read original story 'Dancing With the Stars' Causes Fan Frenzy With Shocking Elimination At TheWrap