Okay, I read the Facebook thread. So unfortunate that this guy was hurt. I got the impression that he may have missed the exit on the straight up-and-over, not that he tried the tricky right-hand-side exit. Does anybody know for sure? It sounds like he landed on his head, which would be more consistent with a front wheel dropping down than a back wheel dropping down.
One time when I came up over the top, the exit was a bit more to the left than I expected. Perhaps that's what happened here, he just missed it and nosedived. I'm just speculating, but maybe the problem was the alignment of the exit (which you couldn't see on the approach) with the entrance?