"Rupture of rear pressure bulkhead is not explaining why aft part of fuselage before RPB separated midair. Also, it does not explain why fuselage after wings is scattered around in small pieces.
Peeling of fuselage skin by wind aerodynamic forces works from front to back. Not from RPB toward cockpit.
Also, with ruptured rear pressure bulkhead, damage pattern aft of RPB should be different, as you could imagine how all that aft galley stuff was pressed through rapidly emerging hole."
Shockwave shattered the RPB and also overloaded the skin joint at the frame where it was torn apart.
Refer to the videos I posted several pages back and you can see similar damage occurring some distance from the blast site, but rupturing the skin at reinforced points (frames).
Once the tail was gone, the nose tucked and likely exposed the open fuselage to the slipstream, further damaging it. Then it entered a flat spin.
Also, those with experience in this model have stated no aft galley on this bird.