You'll get weird distorted colors once its all flashed and booted again but just sign on your google and go to the market and go back to the CWM recovery and flash it again and this time dont do backup within the app! I noticed if you use anything in the app itself it couses this problem, so just do everything by rebooting your phone in recovery. I also had this problem and the way i fixed it was by flashing the P500 kdz. Ok now for all those whos phone just only goes to fastboot means you just soft bricked your phone! but dont worry its still not fully bricked and there are ways to fix it.
