Davewindsor, unless you're a licensed Professional Engineer, you're not qualified to make the statements you're making.

Stop fomenting speculative theories, put the keyboard down, and listen to the people who actually have the education and experience to make these sorts of determinations. You're making yourself look like an ignorant ass.

Forgive me if I sound pissy, but I get pretty sick when lay people try to explain building failure to me--especially one where 3000 people died.