Yes. Every time I hear the plane could not have punctured the building, I'm remind of the proverbial straw poking through a telephone pole after a tornado. We've all seen the pictures. Here is another one. So a rather large aluminum tube flying at 300+mph, puncturing through the outer curtain wall of a skyscraper? Yeah I can believe it actually.
No doubt the whole story is rotten, but it seems like other arguments would be much stronger to make.