It is possible to register on the Bitmixer signature campaign without making a post on the Bitcoin signature campaign thread. That might be a slight flaw in your reasoning. 
....don't ruin my thing here, man!!
Just kidding...I'll just keep an eye on my "final four" for a bit and see how things turn out
Can you tell us what price he is asking to sold this account ?
The price demand may also help us determine the credibility of the account.