I don't know how you can speculate on the failure mode of the VS
The vs didn't fail, the afterbody failed around it - you can see bits of the afterbody attached.
They should have the analysis of reversing wind/sea currents to pinpoint everthing to ground zero by now. To make the suggestion the airplane was intact without the analysis seems premature. Supporting indication of a complete airplane would be detailed evidence that all structure from front to back failed in the same direction. Didn't see any of that in the English version. Also, the recovered bodies would have severe spinal injuries, only remember arms and legs broken.