Ooh. Do you know how to delete the patches though?
The way I had to do it when I did was open my Game Data Utility folder and delete ALL Borderlands 2 data. That includes DLC because unlike the Xbox, PS3 puts the patched data with the downloads. You won't be able to use any DLC when you do this because it requires a patch to use. You don't have to mess with your profile data at all since it is just a save telling you how much BA rank you have and what's in the secret stash and stuff. The only folder you need to go in is the Game Data Utility. Don't worry about losing any of your DLC items either, you will get all of that back when you re-download your content and apply the patches.