Romo will not go to Washington.
If Dallas can't trade him like you say, then they keep him. He only cost $5m extra to keep the best back up in the league. Why cut him? If it's because people say that Jerry's a nice guy and he would do that for Romo, I promise you that JJ will also say "Hey Tony, I'm gonna let you walk as a thank you for your service so you can sign with somebody, even though that's a bad business decision for me....But if I do, it is damn sure not going to be the Washington Redskins."