You are just guessing at all that stuff. Even if the fire was on the ground floor with 100 floors bearing down on top of it it'd be standing today if not for some trigger happy idiot at the helm.
As a guy who's been awfully close to many fuel fires i have my own ideas of how hot they get and what will and won't melt or weaken. The ideas you have would mean fire is simply not containable. Barbeques, fire places, gas and diesel engines, Bic lighters and candles would all be like bombs. It would be impossible to design a building that wouldn't collapse if your wild theories are right.
I'm off for a week, so the comebacks need not be too snappy.