The purpose of a ban is to suspend your account and everything that belongs to it (although technically, everything belongs to Nabi and we're just "borrowing it").
What good would a ban be if you still had access to such a large part of the forums?
Not to mention that this would cause even more work for TSAs (for they would have to track down all the merchandise sent from one account to another).
If you were banned, you probably did something that you weren't supposed to do (please don't break into a discussion over your ban-- not here, at least).