bktballref is technically correct but there is more.
The snapper is no longer the snapper when either; a) he has had a reasonable opportunity to regain his balance and protect himself, or b) he himself blocks someone, or c) he moves to participate in the play (2-20-14).
Most R's and U's interpret this to mean that you can't hit him in the back or in the back of the helmet while he's looking between his legs (even if he holds the pose) but can hit him from the front if he looks back up.
At any time, R1 can charge by him in the gap between him and the guard, even if it means a glancing blow while he is looking between his legs.
|