RE: Twist broke in half...pictures at 1100...
Mid wing planes should have plug-in wings. I've seen a lot of this kind of thing because the fuselage becomes very weak at the leading or trailing edge when the whole wing lifts off the top or the bottom. I think it is fundamentally flaw engineering. Not just this plane, but this type of engineering.
There are ways to make it strong enough, but they usually entail big, heavy slabs of plywood extending for several inches beyond the former at the front and rear of the wing.