Lets be reasonable here....
Do you think he would've left if his *injuries* were really the reason he wasn't playing?
What player goes "Gee, I have a serious hamstring issue. I should really be playing more though. HMM. I'm transferring." No one. Not a single player.
He got shafted from fall practice on. Still think he was probably the best pure runner of the 3, but he really struggled with pass pro as well as some other play calls.
No, I don't think his injuries were the reason he left. But even if he wasn't injured, he wasn't playing
as much because Ameer is better according to the coaches. Tough sh#t.
I think, like all things in life, it was a combination of several things and not just one entire thing.
Was he injured a decent amount of 2012 which affected his number of carries? Yes.
Should he have gotten more carries? Yes.
Do 18-22 year old kids always make justified decisions? No.
He left because he wasn't getting what he wanted. That's fine, go after it. But whether or not he was right in wanting whatever it was that he needed to leave for is not for any of us to decide.