A very interesting suggestion, allowing for partial disintegration of the VS. I suppose it goes against the design philosophy that the main flight surfaces were meant not to fail, not as a whole nor in part, at all. That might need to be reconsidered.
I wonder however whether removal of the VS as we see it in the AF case would not rupture the hydraulic lines. B, G and Y HYD systems are all operating the rudder surface in the A332. If the entire VS was ripped off, I'd imagine that would depressurize B, G and Y hydraulics, and that in itself should be triggering a whole host of ACARS warnings back to base?
Also, the rudder travel limiter remembers the last limit in the case of a double SEC failure, and won't reset and allow full travel until the slats are extended.
Based on that rational, I think we are looking at the VS separation being an effect of the sequence of events after departure from controlled flight rather than a cause.
Cheers
Doc