Sigh. Have I taught you nothing?
The problem is you need to overwrite/flood the site's priorities until it forgets that it's hooked to a series of interconnected websites. The simplest way to do this is to go on, say, hackforums.com and search the keyword "flood"; if you really feel like doing it the hard way you can download "noboundaries" from a google search (no IRL since the site is always moving, sorry) and download that.. it will keep trying for you until a back door is found and you can long in under your "banned" account. NB will even remove account alerts for you so that you can keep posting until you're found out by a manual admin. From there you need to stop yourself from posting in low-traffic and high-policed areas, and there isn't a hacker's manual written for that yet... again.
Of course I have to bring up here that simply creating a new profile or (and I understand your trepidation here) asking for removal from the banned list is the simplest option, but if you're grounded enough in a single profile to keep yourself in circulation then you're obviously the type of person who doesn't care about inevitable consequences. What you need to do then, i.e. if you're a psychopath, is to hijack an admin profile, while is simple enough after, say, 100 hours of work, which is nothing compared to the amount of time I've put into a single Diablo character: just download a rainbow tabler and follow your chosen admin's login times until you have enough info to dopplegang their movements. It's worked before.