The way I understand it to work is like this: a mod deletes a post- the deleted post is archived in a bin that only the administration (Mr. Spellwin, EF Chris, Leo) has access to- we contact the administration if we feel our post/thread has been deleted in error(lol)- the administration restores.
I think it's a good system and if it keeps track of the moderators whom are erasing the threads, that should put a stop to the whole "disappearing" post issue. I'm sure if Mr. Spellwin, EF Chris, or Leo notice the same moderator continually (and for no apparent reason) erasing the threads of the same people over and over again, they will take some type of disciplinary action against that moderator.