Don't sweat it on getting your ad locked for a BTT violation. It's a procedural violation and nobody will think the worse of you for it.
We don't take reservations on unlocking ads though. What you need to do is IM one of the mods, or post a request back here at the time the ad is eligible to be unlocked. In this case, that would be approximately 12:10 PM EST on 12/4/07.
Good luck with your sale (buyers can still respond to you while the ad is locked, they just can't post to the thread.)