Yeah, the UI buttons and Preview are broken when creating the first post of a thread. Admin doesn't care enough to fix it. You can still manually type [code][/code] [output etc.
If one has a sufficient post count themselves, and the spam account has relatively few posts, one can remove the spam by reporting it. If this happens more than a few times, the spam account is restricted.
There is lots of spam here, I have removed up to 50 of them per day at one stage.