May I indulge in a bit of fantasy? Let's just assume there is a Saudi connection here. Let's say there's a prominent Saudi involved, maybe Prince Bandar, known as "Bandar Bush", friend of the Bushes.
So here's the fantasy: Dean knew he was at grave risk, but made sure that if he died, the Saudi-Bush connection would get widely noticed and help take down the House of Bush. The attention fueled, of course, by his sensational life and death. This brings down the House of Bush, deals a mortal blow to the Military-Industrial-Congressional-Executive complex, Evo Morales becomes the next UN Secretary General, and in general saves our asses long enough to save the planet and the species. Dean saves the world.
I saw him at Low Life after many years. And I thought he'd always be there. RIP or if not resting, or in peace, then however you want to be Dean!