Justin Bieber may have aced his performance at the 2011 Grammy Awards, but one of his backup dancers didn’t fare so well.
A backup dancer for Bieber tried a flip off the left-most platform during the routine but ended up slamming onto the stage. His condition is unknown at the moment but, when he got back up, he clutched his back in pain.
Luckily for Bieber and Usher, the fall didn’t interfere at all with the performance (many people didn't even notice it).
Here is a 9 second clip that shows the fall very clearly. Hope he's ok!