I was in the back seat of an L1011 simulator when the sim pilot failed the asymmetry protection in flight on final. I glimpsed a blink on the annunciator panel but before I could focus on that we were rolling after the captain called for the next notch of flaps. Full opposite wheel did not help as we crashed and burned. My takes: the most important pre flight check on that bird was the annunciator panel light check, if something crazy happens undo the last thing you were doing. If the sim aero was correct full wheel could not correct the asymmetry. Maybe additional rudder would have. This is only in regard to aircraft asymmetry certification requirements. I will change flap settings in a turn.