It's all gotta be there in DM's, he's got access to all of it, people asked him to look into it and directly after that he's now running polls about stepping down.
Perhaps he's planning to toss a big ole grenade on his way out the door then vanish to an undisclosed location.
His dead man switch was the letter Q. That doesn't mean he's really dead but it DOES sorta mean that Q has the goods