"The...kids...they're here..." he was trying to make sure they didn't leave anyone behind. He grips the armrests of the chair to brace himself as she takes the mental block off. It wasn't nearly as painful as what he had already been through.
The second it's off, he slumps forward into Jean, his mind tumbling out at her to GRAB at hers, nearly holding her so tightly she wouldn't be able to move. His hands hold to her arms as he carefully pulls back mentally, shoring up his original defenses and trying not to hold to her so strongly. It's just he hasn't been able to hear another mind for so long. Sorry, I'm sorry Jean... he says repeatedly to her but it's such a relief to not be alone anymore.
Nearby, guards start wavering at their posts and falling asleep as Charles' mind finds them.