I keep forgetting that despite our opposing views of magic and physics in gaming mass our total agreement on how to have a grown-up social contract for one's D&D group.Doug McCrae said:People will tell you to be honest with the guy. But you don't have to be. Here's how to kick him without him even knowing he's been kicked. We have done this in the past and it works.
The DM says he's stopping running the game, for whatever reason - game isn't working out, work pressure, wants to spend more time with his family, whatever. Then you simply restart the game, perhaps in a different venue or on another night to aid secrecy, minus the offending player. Simple and brilliant.
One of the most common social deficits in gamers is their erroneous belief that the "adult" way to deal with things is to tell everybody the exact honest truth instead of considering feelings, face-savivng and other important niceties that make the world of grown-ups go around.