That's way too many files to try deleting at once. You're gonna have to delete a small number at a time, over and over. It will suck. I'm sure you could make a batch file or something to do it for you, if you know anything about that.
I never order anything other than their chicken bbq pizza, which is god damn delicious. Their regular tomato sauce is thin and watery and makes the crust soggy. It is pretty gross, at least the last few times I ordered something outside my norm.
My Jeep does this. People around the 'net have replaced transmissions, engines, abs sensors, TPS's, and ignition modules all through the dealership with no luck. Hope this helps.