I believe the whole thing is tin foil hat stuff. But even if the guy did find thermite at the site, who's to say it wasn't somehow planted in the building before the original 1993 attempt to blow up the place? The fact that he immediately suspects the government shows his colors.
He's a nut case. I don't care what great science he did in the past. That's no gaurentee he's not nuts now.
If it was a government plot it would have had to involve 100s of people to pull it off . Not ONE of them let the cat out of the bag in all these years? Spare me .Oh , I know , the govt. killed them all. This guy is out there and %50 of the American public has it's head up it's arse.