PS3 ban is usually a console+gamertag ban. Since your gamertag is probably useless, i mean you don't have any purchased content on it and you can always make a new one, spoofing console id will be uttermost important for you and won't be risky. Other than console id, maybe you can spoof the mac address, which can also be banned. But regardless, you can always change or spoof console/mac id anytime on PS3 so there is nothing like a permanent ban.