During a trining session we discovered that a DVH2 dynamic wing becomes quite nervous when
used with a lightweight harness which is missing sitboard and ABS straps.
After the collpse the behaviour changes radically: light brake input can cause spin, it tends to cravat and to enter in a locked spiral of SAT.
NOTE: the same does NOT happen with a DVH/LTF 1/A glider! The video just wants to warn about this particular combination.
The unusual configurations which follow by this harness/glider combination needs a quite experienced pilot to be rapidly controlled. Even then you might use lots of altitude.