How do you flash back to Stock Gingerbread without desktop?

I want to flash back to stock because I'm having problems and I hope a full wipe and repartition works. I don't have a working desktop with me. I do have a custom recovery (CWM/Philz/TWRP) and mobile odin PRO (mobile odin doesn't like custom ROMs like CM though). Any way I could go back to stock without a desktop computer?