Mostly-agree. I think you're right that cheating, above everything else, is why the NFL is slow to adapt technology. But I do have to point out it's happening with the technology they're using already: http://sports.espn.go.com/nfl/news/story?id=3014677
Newer tech would make that easier, but it's going to happen one way or another.
Newer tech would make that easier, but it's going to happen one way or another.