I would have to see the tape in slow-mo. What I saw from close range appeared to be a pretty rough slam. I guess that the tape can be posted and let all the slow-mo experts express their opinion. From the live action, I don't see how the ref couldn't have called it. By the way, I know that wrestling is not a nice sport. I just never understood when a wrestler is dominating a match why they wouldn't take another avenue to take the opposing wrestler back down to the mat without leaving it to the official whether or not it was a legal move.