Calm down, guys, you're over-reacting. This display of emotion was for a match victory. Are winners not allowed to celebrate? Would this same celebration not happen in every sport you know of?
I think there is a big difference between celebrating the mistakes/misfortunes of others, and celebrating a victory. Had this clapping and hooting/hollering accompanied a scratch earlier in the match, I'd agree with the nearly unanimous sentiment on this thread that the guy and his teammates were way out of line.
But this wasn't in the middle of the match, it was at the very end, and as painful as it must have been to endure, the OP should have just congratulated the winner and held his head up high.
The thing is (for me) when someone wins becuase sof that it isn't that they beat the player, but are taking the cred for it.
In MA tournaments, I have seen someone run into a punch, the other fighter get disqualified, and the one that got hit brag about their trophy.
To me these are similar things. So to rejoyce in something like that is iof bad form. I would be more inclinded to say I was sorry for that out come, and praise the shot (even if I didn't think it was a great shot), that's sportmanship in my opinion...
Pete