Try and e-mail Naughty Dog on it, or just level up again. It's really not that bad being sent back to level one. If you want all of your characters back, just buy a $10 PSN card, and that will get you almost everything for your custom hero/villan, and almost all of the Heroes.
Naughty Dogs #1 Fanboy!
"I hate cliff hangers." -Ellie.
Asshatery knows no boundaries.