End of game - Dirty Play

[NM_Ref]

We had a very competitive varsity game a couple weeks. It was between 2 in-county teams that have a yearly rivalry game. It was a very intense game but in the end the visiting team came out ahead. There was 2 seconds left, the visiting team was on the home team's 5 yard line and was getting ready to kneel on the ball and end the game.

Coach notified the HL that they were going to kneel on the ball. He moved in and started letting the defense know that they were kneeling. At U I also turned to the LB'ers that they were kneeling. There was a LB to my right that was jawing off at the linemen, pointing at the TE saying "I'm gonna get you! Your mine!" As the QB went into his routine, the LB'er starting charging towards the TE and went in, head first at the TE drilling him pretty hard.

How would you all handle this?