JD-EE
Relative to 'rotation'. The BEA's conclusion that the VS was with the a/c until impact, and that it failed 'forward', with a 'left torsional component' implies a rotation of the airframe to the right before impact. As the a/c went in, its velocity in all vectors subsided, the abrupt halt to a rotation to the right would have provided the 'left torsion', IMO. I still believe the VS failed at altitude, but from the statements of BEA, there's your rotation. Obviously not in Pitch, though, sorry if you knew that.
Will