@Oz-Metalhead I earned trophies and didn't sync them, those are the trophies that I will loose. I guess I'll do it. Or make my friend do it.
@pobert06 A guy told me he had the same problem, he formated his PS3 to factory settings (he was gonna sell it) and he tried out of curiosity and it worked. He didn't sell his PS3 but he lost all his stuff, except for his accoount.