I don't want to start anything or be accused of being a downer, but let's be honest. Is there anyone here who's seen him throw who didn't at one time or another say to themselves, "Wow, that motion looks like it could be troublesome"?
I have no more insight into what's going on than anyone else here. Like everyone else I haven't seen his medical records or talked with his doctor (obviously) and I'm really hoping there's nothing going on. OTOH, the realistic part of me is on the edge of my seat.