I think all you can do right now is wait and see and hope it heals. At least I'm not aware of anything else. Good luck.

I think I may be dealing with an intestinally lacerated frog as well- roach fell out of my tweezers this morning and Julep snapped it up and got his face covered in ground peat moss and tiny bark chips. I'm only bowl-feeding from now on. He's also been attacking small bark chips in his water bowl like he thinks they're bugs. How do frogs survive in the wild? How?!