Crack Back Block

[tchaap]

NFHS Rules

Does the "expanded neutral zone" play in to this type of situation at all?

At first I thought you could have a legal block in the back in this situation if the player in motion was in expanded neutral zone. Then I read the post that mentioned that the man in motion needed to be 5 yards off the LOS...this would outside of the expanded NZ?

Just wondering if the motion man was in the expanded NZ at the time of the snap, could he legally block in the back. Of course if he was in that position he would not need to block in the back.