I'm also wondering about this. The install script put the original recovery in the root of the sdcard as dump_recovery.IMG or something like that. I imagine its just a matter of flashing that IMG file, but I haven't had time to tinker with it yet....
grab the stock recovery.img (you'll probably have to find it) for your phone. Flash it the same way you'd flash a custom one, should suffice.
how do you do this? you're going to have to explain this like the first time having sex. I'm new to this.