Pulling down is possible in one of two scenarios.
Scenario 1: Those who are pulling you down are beneath you. That means that they can only reach you as long as they can touch the soles of your feet (by which you ought to trample the enemy).
Scenario 2: You are upside down with your hands dangling from a higher place than those who are pulling you down. If you are upside down, it means you are in reverse mode and all they are doing is helping you come down.
Either way, those who pull you down are simply beneath you.