Sounds like the wing is more flexible than "normal," designed in such a way that it dynamically relieves loads on the outer portion when subjected to higher G load in gusts. It may work in principle similar to "active" outboard ailerons on some fly-by-wire airplanes that decrease wingtip loads under some conditions.
I can see the possible advantage of allowing a longer, lighter wing for better overall performance, and a bit smoother ride in turbulence. It might make airspeed control a bit more difficult in turbulence, but that may not be important in context of a constantly changing wing profile...