since the play clock was winding down, Nate called for the snap when Fant was still trying to communicate to other players. Fant, therefore, did not move when the ball was snapped.
On that play, per Mark Emmert & Chad Leistikow:
* Fant was supposed to run a route to take the safety with him.
* Since Fant did not move, the safety (who got the INT) did not move.
* Nate threw the ball where he was supposed to throw the ball. Problem was that Fant had not moved and the safety had not moved either It was too easy for the safety to make the pick.