The Chaser
That is out of my area of competence. I know electronics not flight control. So take the following with a HUGE dose of question. {o.o}
I have noted three possibilities in discussions.
1) It remains as it was until the slats are extended.
2) It opens up slightly until the slats are extended.
3) It opens up all the way.
I BELIEVE that option 3 has been discarded and either option 1 or option 2 is the case. So far I don't know that an A300-340 expert has said anything definitive.
I PRESUME that the pilots would be aware of this change from the alarms given and have experience with the ALT rules at least in the simulators. So it is somewhat premature to decide they over-controlled and lost the entire VS assembly rather violently even if other observations vaguely suggest the VS was lost at altitude. We just do not have enough hard data to even make crazy assumptions.