Ink...You missed where he said he saw the second plane hit.
Whereas I loathe the current administration, and I do believe it's as crooked as a Grand-canyon gulley, I don't believe that those buildings were brought down by explosives.
First of all, why would anyone rig the bombs at the top portion? If you're a terrorist, and want a max. body count, you blow at the bottom, to trap as many inside as you can. You have the max weight of the building working for you, rather than a smaller portion. You also hit both at the same time, rather than waiting for a while, Like the period of time between the first and second attacks. Another thing, too. You would have to Go up 2/3 of the building, smuggling thousands of pounds of explosives and equipment, wire and rig it all without being detected by any of the 1000+ people on the floor, and then fuse it and arm it, and then get out of the building and detonate it without being discovered. Even with a power down, or any kind of drastic maintenance work that would result in the building's total evacuation and clearance, There would not be enough time.
The only con. theory I've ever heard about 9/11 that even remotely held water was that the CIA or some other party helped Otta and his gang get through the terrorist watch lists' so that they could train for the attack, and helped them with untraced funds, and ducking the FBI.
As to never having any real connection to Bin Laden...I'll admit that even Osama seemed suprised when he was first contacted about it(I believe he denied it for a while.) I've wondered if maybe it was done by a group rival to Al-Queda, That we've never heard of, that pulled it off to get the U.S. started after bin Laden. There are LOTS of smaller terrorist groups and splinter-cell type of organization's out there.