I looked at Brown on the 1st play. Grabbing yes. He still had good color (he was between defender and Allen),so until the defender starts to pull to Brown's left, the grabbing doesn't matter much. At that point the ball was thrown, so the pull was irrelevant. Not to mention the Umpire called it, so unless he's watching the blockers completely across the formation, I'm inclined to say he called Dawkins.