I have a similar problem, except I didn't forget anything. I actually completely wiped my hdd. psn account, games saves, music, purchased games. everything is gone. It happened when I was trying to put the hdd in my friends ps3. I formatted it thinking it would just upgrade the firmware and not delete everything on it. what do I do to get my account back with all my purchases? I mean, I paid for the stuff, it seems like I would have the right to own it.
Your account shouldn't of actually been deleted, it should have lost it's link with your PS3, you should be able to still sign on with the same account on your PS3.