In order to graduate, your last however many hours (maybe 30-40?) must be spent in residence. I don't think he would have been able to take distance courses and graduate at this point.
As for those who say he should have stayed if he wanted his degree...VY grew up in the GHET-TOE. His stock wasn't going to go anywhere but down had he stayed another year. I would have loved for him to come back and wax college football's *** for another year, but by leaving, he took care of his family FOREVER. The risk of getting injured, however unlikely, might have meant getting NO shot in the NFL and having NO money for mama and sisters. It's a lot easier for us as fans to what-if and say that we would have stayed. If put in his position, I doubt any of us would have stayed.
If anything Vince does is wrong, I don't wanna be right.