Re: My Legendary account has been banned, any Modo to tell me why ?
~snip~
I am just giving you one possibility on the question you asked :^ Then this has to be the dumbest thing I've ever seen, copy a message that was just posted. I still don't find a reason, why would you do that.. 
Also keep in mind that his proof of signed message was one of his last post which really does not prove that he was the owner all through out of the existence of the account. He might created this signed message as back up when the original owner will try to recover his/her account.