Like i said, you're more than likely just going to have to start another game or save file.
I'm not sure. I don't think it would stop the whole game just to see an enemy tossed by the force in cinematics, it would be a little more subtle than that. Are you sure the game's not doing it already? Just being able to see the enemy 'fly away' is probably what's meant. Unless there are special combos or big moves that warrant such a thing...?