The mass sensor body does need to come off to get to the throttle body. As I remember, there is a large hose clamp around the rubber connector between the two. I suggest buying a new one of these as I tore one prying off the mass flow sensor before. It is definitely a tight fit, and these parts get brittle.
P/N A 119 141 01 67 (it's called "intermediate piece")
(Oh man, this car is sooooo fast.)