Probably. But that wouldn't really be the point of it. The purpose would be to figure out what the barrier is even made of. If he turns into a hardened material of some kind that means it's solid.

If he turns into energy well it's an energy barrier. And if it's an energy barrier he might be able to "become" the barrier in a sense and take it down for us. Whatever happens we'll at least have something more to go off of besides that it's "an unbreakable barrier".