How can I tighten a loose hanger on my damaged over-ear headphones?

Ever since I stepped on my headphones, the right can (if that's the word) hasn't cupped my ear properly. It seems like the hanger might be too loose (or something around there). When I hold the headphones up, that can dangles down more.

Squeezing the hanger grips the can a little more tightly. So I tried taking the hanger off and squeezing it gently to bend the plastic, but it didn't have any noticeable effect when I put it back together; I'm afraid of going too far with that and breaking the hanger.

There's nothing wrong with the electronics.

Many thanks for pointers if you've encountered this.