Is it possible for bad bear to dig the messages which are deleted permanently because deleted by both parties sender as well as receiver.
If theymos can't do, then BadBear can't. However, theymos maybe able to dig a backup and restore your PMs but I don't think he would be willing to spend that much time though its worth asking! It maybe better to tell the date of the PM(s) you want to restore, so he will know which backup.
Does BadBear has access to forum backups?
i would think he does based on this
He can no longer edit or delete his posts, or delete others posts in self moderated threads, but theymos will have to deal with the restoring posts, he can do it far easier/faster than I can when it's a lot.
but even so, I dont think it would exactly be high up on the priority list.