The only way I could see that is if D* didn't carry NFL ST at all.I've never had DirecTV, so I can't say much. One belief of mine is that when (NOT IF) DirecTV looses its status as the only option for the Sunday Ticket, it will experience a mass exidus of subs as well. .
But even if its not only exclusive to Directv, they still only have less then 2 million NFL ST subscribers. Not all of them would leave, Maybe the movie fans.