I'm pretty sure there's a couple ways, but I know for a fact that getting membership completely bypasses the problem until you lose membership again. You may have to be a certain level or have been around for a certain amount of time, I've no idea
EDIT: After looking at the wiki, it looks as if once you get membership once on the account, then it's removed for good.
Even buying/selling bils of gold still doesn't always get you banned. You can probably beg in the ge for an hour or two and make enough for a bond lol. Try doubling money xD.