All this spin info is great. A major factor in the info we have is if the aircraft was in a spin as a result of vertical stabilization/rudder failure or (more probable) A/S indications conducive to entering a severe storm.
I doubt the spin scenario and am partial to the latter. Obvoiusly the spin could have resulted from horizontal loads created in a high altitude stall resulting in a spin in said volitile conditions.
The inital factor was the influential key.