Not saying it wasn't a terrible elbow, but it's an emotional game and sometimes you do things in the moment that you regret. World Peace has actually changed a lot since his Pacer days, so I would be inclined to let this one slide. My only problem is that he denied it was intentional.. It was clearly intentional. I don't think he thought he'd give the guy a concussion tho..
But this type of stuff happens a lot, I mean KG kicks people in the balls and gets away with it... I think World Peace should be suspended for the first round, and fined $25,000.