I saw it and agree it looks incredibly bad, but I think it's just too staggeringly dumb to be deliberate, even for Artest. I mean, he wasn't fighting for position (he was under the OKC basket, and I don't even think the ball was in play!), he was celebrating after a dunk (which is so unusual for him that the whole arena's eyes were on him...) - it just makes no kind of sense that even someone as dumb as that would go for a flagrant elbow at that time.