Also, it looks like the trim is a red herring and the aircraft can be recovered in approximately 5,000ft on sidestick alone *even with full nose-up trim wound in*.
This may be a premature pronouncement. In Dozy's case, the trim came promptly back down with nose down stick. If I understand CONF's experience, it did not.
On AF447, it seems to have stayed solidly at its highest value. Was there long enough nose down to get it even moving a bit if it was working? Did the airspeed have to become valid before it would be enabled? Was some interlock stopping it?