He pulled the guy down by the back of his helmet.
It's a PF call. Every. Single. Time. He was even pleading with the refs that he didn't do it!
Stupid freaking move the guys on his way down anyway. Let him fall short of the first down.
Bad call? NO. Bad move to take a guy down by his helmet. It's the same as a face mask to take a guy down like that. It doesn't matter. Facemask, the part of the helmet above it, or anywhere else.
b) No player shall grasp and then twist, turn or pull the face mask, chin strap or any helmet opening of an opponent.
Stahp whining about the refs.
It's DULL.