Point of clarification on "it also doesn't allow running backs, to tun outside the box, and then come back in to cut."
Once the ball crosses the neutral zone, there is no prohibition on a player cutting "back toward the original position of the ball" or "inside" or anything like that as long as the cut block is from the front (10-2). So if that back is coming out of the backfield, going wide, and then coming back inside the cut, he's okay as long as the ball has crosses the neutral zone. If the ball is still behind the neutral zone, it's a foul.
Tough to officiate, especially with a 4-man crew.
