So he's saying he messed it up but he can't put it back the way it was.. that's a drag. There should be something that can be done. I've never had a root gone bad. Make a new post in "all things root" telling what has happened since rooting the handset. Someone with a bit more troubleshooting exp may be able to give you a better recommendation. I'd try and flash it if it was mine, but maybe someone has a good solution for you bro.
Android Zombie v4.0