I don't know if there's definitive proof that confirms this call one way or the other. If you're a EWU (or apparently UM fan), then you think EWU got screwed and it was a terrible. If you're a MSU fan you think the officials got it right.
Because there's not a definitive shot, I think whatever was called on the field would have been upheld. I don't know if it was the right call or not, but I know that there wasn't enough evidence to overturn.
Here's what I found on how the NCAA defines a catch....I think arguments can be made to support both sides, thus why I think "the play stands" would have been the outcome regardless of the call.
-Regardless of contact from the defense, if a player hits the ground while attempting to make a catch, “he must maintain complete and continuous control of the ball throughout the process of contacting the ground, whether in the field of play or in the end zone.”
-It’s not a catch if “the player loses control of the ball while simultaneously touching the ground with any part of his body, or if there is doubt that the acts were simultaneous”. A little ball movement while the player has control doesn’t change much — even if the ball touches the ground — unless he loses that control
-“If the ball touches the ground after the player secures control and continues to maintain control, and the elements above are satisfied, it is a catch.”