If grabbed you can put one foot back so your weight is falling, pull them into you adn as you feel them resist and start to lean back clobber them using the power off that back leg that is now bent.

If they are hugging you and you are both head to head ,if your head is say on the right side(on his left shoulder) cover your left temple with your left glove pull your head back and replace it with a right hook to his temple as your out side heel kicks out and your hip turns in.

IF the ropes are right behind you ,you can drop one leg back down behind you and sit back on the centre ropes and it opens up a space for you to spin out under his weaker side and then catch him on a turn.
If you push back slightly he will lean further into you just on reactions and that will help you to go down and out.
A little shove the reverse way you really want to go makes them react and it help you.