Morris was getting his ass kicked for 3+ quarters to the point he was clearly favoring his left leg. At this point, even the announcers began calling for Hoke to pull him for his own safety. Hoke leaves him in. Shortly after, he suffers a wicked/illegal helmet-helmet hit from a varmint defender. He gets up clearly woozy, and practically collapses into one of his lineman's arms. He regains composure and waves off a substitution. He should not have that call. He stays in (I think) one more play and is pulled.
Gardner enters and gets his helmet knocked off after three plays, meaning he has to sit out a play. 3rd string QB Bellomy cannot find his helmet. Instead of calling a timeout to allow Gardner to return, they send a woozy Morris back out. It should be noted by this time, even the crowd can sense the kid isn't right and has been booing with great gusto. The announcers are going crazy as well. After the game, Morris leaves the field on a cart. Hoke claims post-game that he didn't know Morris was badly hurt.
As bad as all of that sounds, it played out worse in real-time. Just a horrific sequence and a real low for not just scUM, but football in general given all of the controversy surrounding head injuries. It was the literal death knell of Brady Hoke's coaching career. The only question now is does scUM have the balls to [Mark May]can him now for gross negligence.