I'm pretty sure that was just a random troll that came a-wanderin' through our little patch of the net. Do not feed the trolls!
They thrive on attention, so I'd recommend not giving it any. If it comes back it'll probably start spamming as many threads as it can, trying to get one of us to cough up a morsel or two of response. I urge everyone to refrain from doing so. If it gets really bad you may have to ban it, Chris.
With just over 100 members plus the occasional guest, BT probably doesn't get trolls all that often. But over at The Neutral Zone - a "sensitive issues" BBS I posted to for over a year - we were utterly overrun with them. It's why I stopped posting there, in fact. Do not let your site become known as a troll feeding ground; ignore the little ones, ban the big ones, and delete their posts when necessary. Doing so is not "censorship", it's pest control.