Outright aircraft strength

[RRNemesis]

4CGC

Smuj & KnC
The investigation, into the Ventus, concluded that: the failure of the glider wing was due to it being flown with the trailing edge flaps down, and possibly the airbrakes extended, beyond the flap limiting speed. Flap failure and subsequent damage to the rear spar caused a loss of torsional strength of the wings; these departed the fuselage following several violent oscillations.
There was no comment in the report regarding spinning or experienced G loads.