Doing it right.
Francois Louw of the Stormers charges ahead. Bismarck du Plessis of the Sharks pulls him down. Louw falls beyond Du Plessis. Du Plessis' lower limbs are pinned but he moves his body, hands clearly not interfering. He moves his body in such away that he allows a free channel for the ball to come back to the Stormers.
Play goes on.