It was a bad night for Scott calling plays. But let's be fair to the system right now. It was his first bad game thus far calling plays out of 8 tries. You're not going to have him call amazing games every week.
Let's just hope he gets it back to where he had been previous.
One thing I think that got him, and has gotten Dallas for years, is when they come into games where a team has a seriously bad secondary, like Washington, and they just become bull headed that they're going to exploit that with down the field passing. Dallas has had this problem for years where they just act like they're going to force the issue and run these longer routes, and plays, and wind up getting themselves in trouble with it.
Play to your own strengths and don't worry about what the strengths or weakness of the opposing team is. Let the game come to you, and take what they're going to give. Last night Washington was going to give up the running game, and could have given up big plays with screens and quick slants, and Dallas simply never went to those quicker passing options. They stayed hard headed trying to hit big plays on the secondary which were simply not necessary to win last night.