He's a con man... we just don't know who he's trying to con. From a confidence game perspective impersonating a recluse like Satoshi is a great choice, in fact a classic choice. Especially after that other fellow was incorrectly identified as Satoshi by national media and Satoshi didn't do anything to correct those claims.
His P2P Foundation was hacked afterwards and then locked for good; but P2P Foundation confirmed at the time that as far as they could tell, it was Satoshi.
Was it signed? I was following pretty closely and my version of history also had that as being fake. This is one instance where I would love to be wrong though.
