Big threads are rarely deleted or moved to the trashcan and are in fact usually just locked. The only big ones I've ever trashed are utter shit threads in gambling discussion or off topic like is 0.002 bitcoin a good amount to gamble with or what time do you wake up in the morning etc after they have quickly been spammed to death. I don't know what thread has gone but I'll have a scan of the trashcan when I get on the PC.