The narrator used a lot of words. I am not sure I understand the point. If he knew 9/11 was a future event I why was his message so cryptic.
BTW, the first thing I thought about as seeing the 9/11 events was the pictures in the Paradise book about falling buildings. So, perhaps the Watchtower provided a script of these events. I often wondered if the terrorists got the idea after looking at the pictures from the Paradise book. That was one evil book.