Parsing the Report
What part of the wing is creating lift, and forward velocity at >40 degrees AOA? The roots probably stall below 20 Degrees, and the wing is fully stalled at a few degrees more, the tips stalling last in normal wing design. You should get a good pitch down moment while the root is stalled, and still have roll authority. Beyond that, the machine is no longer planing through the air.
Was the 107 Kts reported by the BEA really Groundspeed, i.e., horizontal velocity, or was it merely 107 Kts velocity in any direction?
Was there any evidence in the wreckage showing any forward speed at all? I believe the radome was broken, but not smashed.
Anyway, it's challenge for the synapses.