I remember that quest, and Id like to forget it. I played on the PS3, so no cheat codes, and it was sooooo annoying.
Actually, there are cheat codes for the PS3. Lots of sites shows how to activate the PS3 cheat console. The codes themselves are the same as the PC version, just a bit more complicated to activate the cheat console for the PS3.
During the game, hold L1 + R1 and press START, UP (D-pad), START, DOWN (D-pad). You should see the debug menu appear.