I am stuck on a certain mission that requires you to hit the car you're chasing repeatedly to catch items that fall out of it....specifically, the one where you are playing as lisa and you have to hit cletus's truck to get the roadkill out of it. I enabled the blow up car by hitting it once cheat, so now when i try to do this mission, it blows up on the first hit, and I ultimately fail the mission because i can't hit the truck anymore...HELP!!!! Please tell me there is a way to reverse this cheat so i won't have to start completely over!!!