"Scott!" Stiles was in utter shock when Erin broke out of her chains without a problem. There had been two sets on her and it was like they were nothing. Well, now he knew chains weren't a thing to use in the future.
He backed up and watched. What could he do? Nothing. He was just a fragile little human with no way to defend himself.
When Scott told him to run, he didn't want to at first, but he ended up taking off.