In my experience, barriers are only as strong as those maintaining them. I'm guessing that if we hit the barrier at once we can at least create a hole large enough to get a handful through to the other side, allowing them to hit the barrier with their full strength from the outside.

[If only he had access to his G Corp assets, this would be so much easier. He doesn't fancy the idea of giving everyone their full strength back, on the off chance that they would be stronger than him, but it was a gamble he'd have to take. Besides, he faced down Azazel and lived. His demon wouldn't let him die so easily.]