I asked the other mods....no one, other than me, even recalls the thread but I didn't deleted it. It wouldn't be the first time that threads have gone MIA however. Random account, thread and post deletions happen from time to time and there is never a record left for us to follow. The same sort of things happened the last time the forum's security was compromised if I recall correctly.
So, I'm afraid we have no idea where your thread went.