@jugofpropwash
[Not a pilot] I can understand (I suppose) a couple of occupied seats falling out near the threshold through the large hole in the rear pressure bulkhead. I have not yet found a decent picture of the bulkhead, but I see that it's pretty broken. I understand that people easily used it as an exit when the plane came to rest.
But what other ways were there out of the plane? Through the one exit door that fell off? Was there another hole in the plane that ejected one or more passenger? Or did more people fall through the bulkhead gash much nearer to the final resting spot of the plane?