His coach.
From the moment he was tackled after intercepting the ball, his only priority was to get to the sideline and taunt the BYU fans. You can see it. It was 100% planned out and scripted. He was just waiting for a reason.
Teammates and coaches were trying to congratulate him and he shoved past the without a word, just to get to the bench where he could take off his helmet, stand and taunt.
This 1. Reflects poorly on his school, team, coaches etc. 2. Could result in a penalty. 3.riles up the fans and other team, which makes the rest of the game harder. 4. Makes it all about you and shows who you're REALLY playing for.
If I'm the coach, we're having a sit-down.