I have a friend who is VP of marketing for a very big clothing company and from all the stories he's told me about the pain in the ass of creating commercials and ads, I can assure you that those numbers on the sheep were carefully picked. Nothing that is shown is not hashed over dozens of times in meetings. They look at a storyboard and go over everything. So even if it wasn't intended as 9-11, you gotta know that someone mentioned it and they stuck with it regardless. I mean they could have picked any other numbers other than 9 or 11.