WOW, I didn't think there was THAT much inertia there with the alt, ps and ac comp to cause the pulley to spin out even if the crank was rapidly retarded. Learn something every day I guess.
I hope I don't have to spring for another DMD as I don't want to go back to stock pulley. Filled front and rear roll restricters from Pole introduced about all the NVH I want I think. If I have to I will I guess tho.