If you don't have the walk thru door, jsut the windshield closed won't cut it though. Mine would still work it's way out with the windshield closed.
Isn't the X2 MC's best selling model for a while now? Lots of them out there, have you tried the salvage yards? I think the seats are the same size as the X15 too, what about the guy who's yellow X15 got washed up in the Sandy storm?
Or a little midnight auto might get you one!