From the beginning of this thread I have felt that the event occurred very quickly, and a rapid deterioration of flight occurred. The suspected fact that paxs were without life vest donned and that cabin crew were not at assigned, or any station seems to validate this. Anybody not seated, or probably belted, at the time most likely never reached a seat and were at the mercy of where they were placed at the onset of the event.
A stall would have ultimately placed the airplane on any random heading, particularly with the drop of the right of left wing. Resulting spin and rate of descent could extend the path in any direction. However, drift estimates should not be discounted. Can one say it is really the only simi hard fact to hang your hat on.