There are a number of ways to skin a cat. I don't have a driver's door, so it came back through the living area and out the side door. I took all the furniture out of the living area. Laid down tarps, and then on top of the tarps I laid down plywood to support the engine hoist rollers. When I brought it through the side door, I put plywood on either side of the door jams, so I a swung the engine around trying to get it out, it could bang against the plywood and not damage anything. Picture series is here, if anyone wants to see it.
http://s213.photobucket.com/user/Daveinet/library/Engine?sort=3&page=2While some have pulled the heads off to get the engine out, I was able to remove it complete.
Having seen my dad's W22, I think I'd be inclined to drop it out the bottom. As I recall, there is a lot of space between the frame rails. I think that would be the least labor intensive.