Heck, popping any (de)buff will pull off others any mob that is also technically engaged against you. All buff/debuff applications have a small amount of enmity attached, and that can be useful after being multiplied a dozenfold by tank stance. (This is also why HoTs' application can still pull off the facepuller even after the ticks' enmity has been removed... which facepullers can in turn pull back by popping any buff of their own.)
