Stubby wrote:

Is it even possible to operate an airframe in a way that will produce
wing-bending of that degree?

Yes.

In the break test, wings must withstand the rated G load multiplied with
a safety fator of 1.5. Gliders are usually rated for 5.4 G (or some
such), which causes impressive wing bending. IIRC, the wing in the DG
video broke when it reached the factor 1.7, which made the manufactorer
somewhat unhappy, because it proved that the wing had been designed too
strong, which means too heavy and too expensive. They have corrected
that now.

Stefan