Actually Deb, if you watch the play in the background of the clip while he is pushing etc, they are still running and covering the punt. Here again, if you watch any other play in the game, zeroed in on a pair of players like that was, you will see almost the exact same thing every time....
The punch/forearm in the back was too much and should have been flagged, but the rest was just a player on player block during the play.