That's the whole idea CR - trying to help the ref understand that we UNDERSTAND what we are doing, whilst trying to make sure that we are not "accidentally" penalised by creating something that isn't what the ref is expecting.
If the sack is done backwards ie pulled towards our own DBL the ball hopefully ends up closer to our defenders who have stepped back in preparation, and away from the oppo supporters who have an extra step to take - which hopefully gives us time to get hands on from behind "the gate"
In a perfect world... ;-)
didds