Flawless

Wow. A perfect dance. Sabrina Bryan and Mark Ballas dance the Cha Cha in the season finale of Dancing With The Stars. I'm guessing they feel vindicated with this dance (even though they weren't competing in the finals).

Going back to when Sabrina Bryan and Mark Ballas got the boot, it was controversial since they were one of the best dancers (the judges loved them), but they failed to receive the number of votes they needed from the public resulting in the lowest overall score. Afterwards people questioned the voting elimination system. Did it need to be changed to ensure that the better dancers do in fact make it to the next round (due to their dancing performances and not JUST the number of popularity votes)?

Then you read Sabrina Bryan's bio:
Equally successful on screen and stage, Sabrina Bryan continues to demonstrate her creative versatility. Performing since she was seven years-old, Sabrina is currently a member of the multi-platinum recording act, The Cheetah Girls, as well as the star of the hugely successful Disney Channel movie franchise of the same name. Sabrina also starred in and co-produced a fitness-dance DVD called BYOU which was created so young girls can have fun learning cool, hip hop style dancing and get fit at the same time. BYOU was founded in early 2006 and has sold more than double-platinum. She is also co-writing the book Princess of Gossip for Pocket/MTV Books.

In case you didn't want to read all that
She's a professional dancer...

?
She definitely didn't deserve to be eliminated, but I question whether she should have even been allowed on the show as a contestant in the first place.