How do we know its not master p scamming and just telling us he sold his account?
After reading all of this, it's my thoughts as well.
The only proof we have that he did sell his account, is coming from him. While he was a trusted member back then, right now, all of that is going to ashes. In his situation, anyone would definitely lie to try and keep a straight face.
The only ones who can prove if it is indeed him, or not, are the two forum admins that have access to IP logs. He can't be that much of a smartass and remember to change his IP to another one every time he logs in after August, or at least I hope so.
If he did sell his account though -which is still just a theory that is only backed by one untrusted person, him- then he should still cooperate and make public whatever info he has of the buyer, which should include at least the e-mail, or whatever info he used to contact him with, and if he did indeed sell everything to him, from bitcointalk account, to PGP, and even potentially paxful. Which is exactly why I am still skeptical about this whole account sale. People are just getting biased because of his trust, and can't give equal weight to the fact that he himself might be fucking everybody over.