I think Mr Lee was hung out to dry by prematurely announcing product that may or may not be in the pipeline at Leica and perhaps with the mess with the M8 roll out(I am not speculating).
I think George has hit on something, the M8 was released before all the bugs were worked and if I am dropping upwards of $6000 CAD on a Digital M body, it better be working perfect out of the box. I don't think Leica customers are keen being the beta testers for new product and paying for the privilege. The other heavy duty digital plaform around this price point is the Nikon D3.
What Leica should have done is left the M platform for the film purists and built a full frame Digital R platform not to be confused with the digital back adventure.
From what I gather Leica is privately held so it will be a while before the rationale comes out for Mr. Lee's sudden unplanned career change. Right now we are all speculating.