If you're ever pinned in a omoplata shoulder lock, here's how to get out of it. When you're down on the floor and your opponent has your legs, make sure to get your legs wide enough so you can fit your arm through. Now hold on to your right knee and squeeze down, putting pressure on your opponent's hand. Next put your other hand on the top of your left knee and squeeze your knees together and pull up. Now simply wait for your opponent to tap out. They won't be able to break free or stand the pressure and will give in before no time.