Perhaps he thinks because he took a deal in exchange for information on his superiors and to fill in blanks, that the DOJ will whitewash his ass.
He forgets that treason, especially by those paid to guard against it, can and should be tried by the military and I doubt they've cut him a deal. He may not even consider this, since he's a career DOJ boi, it wouldn't even cross his mind.
What needs to cross his mind is a military firing squad.
Fat lady not even gargling yet.