Actually, your explanation omits the exterior walls enclosing each floor. Think what happens when the opressure pushes on those walls at each floor. What I am pointing to —the exploding outer walls— is not seen on 911. In fact the image is more one of peeling a banana, with massive center column beams levitating and multistory steel turning to dust while standing. That upper thirty-five floors which tipped to over the street below not arriving at ground level is also counter to your plasma theory..
We don't see those walls, MHG. When we get to the levels where what I describe is happening, everything is behind a huge cloud of debris, dust, and smoke. Anyone who claims anything counter to that is not telling the truth or has Superman's X-Ray vision. Very few of the curtain wall panels were recovered. That curtain wall was STRUCTURAL, it's not there merely for decorative purposes. You hit that a plasma at 2700 PSI and at what ever temperature it reached, there is not much going to be left of it. It's the primary egress point for all that superheated air/plasma. Those panels have to start falling from a zero velocity starting point and they are surrounded by very hot materials.
By the way, each floor weights in at less than 7 million pounds each. That does not count the weight of the center core or curtain wall.