If a flag was thrown, then I have to ask, what would the call have been? It wasn't a late hit, the play was still in progress. Nor was the guy out of bounds (until his heels touched the ground LOL). It wasn't targeting, Jalen hit the dude shoulder to shoulder. Surely wasn't some sort of illegal block either.
Smash mouth football was what it was and KUDOS to Jalen for protecting his teammate as he was about to cross the goal line.