Just some guy
Join Date: Jun 2001
Location: SC foothills, USA
Good question. When a thread is moved or deleted by moderator or administrator there is left behind a marker that this happened. Regular users can't see those but the moderators can. Your thread just vanished, there is NO trace left behind. This leads me to believe something weird happened, no one purposely removed it.
On top of relocating this thread to the site issues forum so upstairs will see it I'll see if I can dig up anything more. I saw the thread too, that was some pretty cool stuff.