I'm not so keen on #4 - we have to establish intent now... Is the A player blocking, or trying to get to the ball.
I guess we already have that with blocking in the back to get to a loose ball, but #4 doesn't sit comfortably as I read it.
Just wondering about #10 - the play seems more likely that B22 would do this than an A player muffing a punt on their own goal line, right? It doesn't have any bearing on the issue which is a safety either way, but if it was an A player, they would have been responsible for the ball being in the EZ either time, so it is moot. If it is a B player, they are not responsible the first time, so there is a difference, and a reason to write it.