I'm not a vet, but if his jaw can't be opened, that might be a real problem. Syringe feeding is a possibility but if the jaw is broken right now moving it might make it worse.
If it comes to that, there are threads on euthanasia I can link here, but you don't know for sure that his jaw can't be opened yet, so I wouldn't jump to that just yet.
Thanks, we're going to see if he will eat the crickets we just bought, and we did the pedialyte soak. He is fine and active, so I really hope he can open his jaw. Fingers crossed.