Nope, the Cowboys will play a lot better in that game. But they'll stink it up again next week against the Jags.
Quinn's challenge will be to train the DEs to never crash down to stop the run. Whoever is at DE HAS to stay home and just wait for the PA fake keeper with Hurtz and pound him in the backfield when he keeps it. Let the other lineman and LBs stop the inside run. This will be a real challenge with the Dee line rotation because a squad of DEs will have to be disciplined, EVERY DOWN. They couldn't even consistently stop Mills today because the DEs crashed too hard.
If the Cowboys makes sure to shut down the PA pass by having the unblocked DE just play Hurtz aggressively every down, the Cowboys have a good chance. Otherwise, they'll just run and throw all over the Cowboys' defense.
Basically, stop the run (Hurtz included) and run the ball, with the Cowboy's own liberal use of PA, early.