If you really want to, go to edit and there should be a delete post button.. -Under your original post... If you delete the original post, it'll delete the thread.. My bad, I guess this type of VB doesn't have it enabled..
I have to do it from time to time on my car boards due to my drunk posting.. LOL And due to jerks on my other car boards (that I'm no longer on due to them being sed jerks) that seem to find a need to flame me, so I just delete the thread.. No need to retaliate..