Well I googled it and got this:
http://psvitagamer.net/threads/bought-vita-cannot-deactivate-tied-psn-account.2078/
Basically, format your memory card or restore the system. I don't have a VITA so you're on your own for how to do this but I imagine it's just in the menu options.
No one likes searching for answers but I imagine that searching Google for the few minutes is much quicker than waiting two hours for us and our snarky attitudes to come in and help. Plus now you have to look through our passive-aggressive attitudes and backhanded compliments
