Originally Posted by
GordonR_Cape
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Leaving the horizontal stabiliser in the last known good position would seem to be a sensible choice, and the aircraft should be controllable in this state. Flipping the trim cutout switches, and reverting to manual trim would remain an option (as before), though a lot less likely to be needed.
1 in 10 or 1 in 1,000,000 in "should be controllable? - in the last known "good position"