Walter's gonna kill Hank. The talk about not killing family when he was with the lawyer was probably true, but once he realizes it's hank or prison, he'll probably kill Hank. That's if Hank continues to hesitate about going all out on turning in Walt. I don't think he'll get anything useful out of Pinkman and spend a few more episodes looking for his "proof" then when he finds it, Heisenberg will get rid of him.