Wentz was on his way to the ground and Clowney sees that, this wasn’t an attempted tackle, he was only trying to hit him. Which is fine except spearing and hitting guys on the ground isn’t allowed the way it used to be. A 260 pound man launching onto you when you’re on the ground is going to cause injury and despite what Clark says the league is trying to eliminate it. Add to that he was leading with his head, if he keeps his head up extends his arms and grabs Wentz then Wentz probably stays in the game. Offensive and defensive players are still using the helmet as a weapon and this one seems like a sure fine.