Edit, video available: http://www.youtube.com/watch?v=DPIRNf_NHQM&eurl
Incident happens 46secs into vid. 

The world’s football retirement home, also known as the
MLS, is great for those looking for some slow-paced ’sawker’
action, and now it is also a fantastic source of hilarious
injuries.
While playing against David Beckham United on Saturday,
Argentinean Real Salt Lake striker Fabián Espíndola put the ball in
the net after six minutes, and in celebration, he attempted one of
his trademark backflip celebrations. Things didn’t go quite as
planned, however, as he broke his leg on landing, and then found
out the goal was disallowed for offside:
“I’m embarrassed, “said Espindola, who celebrated goals with a
flip since his days as a youth player in Argentina. “I’m never
going to do that again. I don’t know what happened. I’ve done it a
million times. If I would have known I never would have done
it.”
As if this wasn’t embarrassing enough, LA Galaxy midfielder
Bryan Jordan thoroughly drank Espíndola’s milkshake by
executing a perfect flip shortly after his goal in the 2-2
draw.
Espíndola will be out of action for up to six weeks.