Well, yeah. I mean I moved it to Discussion once, it was deliberately moved back to Main, I moved it to Discussion again, then it was moved back to Main again, so I hit 'Ban'. Er, duh?

It seems it may have been accidental, rather than deliberate. If so that would seem to be a simple bug in the lesswrong source. ie. Almost certainly 1 line of code in the part that selects which option starts selected on the edit page.