Given that the BUSA wing is made to be strong enough to use without rigging, it would be hard to use it as is. Typical BUSA construction used sheer webs between two spars. Even if you leave off the webs it would probably still be too stiff.

The basic fact is this: If the wing is strong enough to be used without functional rigging, it's definitely too rigid to warp.

On the topic of wing-warping, Don Coe actually used a hinge in the second (rear) spar of his AVRO wing because even the scale construction wouldn't twist enough.