Answer
- There is no need to delete your PSN account, and there is no way to remove a PSN account from a user.
- What you should do is create a new user account on your PS3, and, using that PS3 user, create a new, US-based PSN account.
- Anything that you download using this account should be accessible using your existing account.
How to Properly Deactivate a PS3 System from a PSN Account
How to deactivate a PSN account on your PS3 system (psn game sharing)
How do I delete my PSN account on ps3?
1. There is no need to delete your PSN account, and there is no way to remove a PSN account from a user.
2. What you should do is create a new user account on your PS3, and, using that PS3 user, create a new, US-based PSN account.
3. Anything that you download using this account should be accessible using your existing account.