I think JS is the deer in the headlight's on this one. He got tea bagged by the 4-8, which, more so than the 4-8 alone, was the cherry on top of an already melting turd sundae.
He is smart enough to manipulate, deflect, and avoid situation's which expose his accountability regarding the football team. After all, it was Brian Kelly who was actually coaching the team, not Jack.
I think this was Jack's "oh shit" moment. And he flinched.