The Cowboys really misplayed the Romo situation. First, they brought back Romo about 3 weeks too early, he wasn't fully healed , and they knew it at the time, exposing him to a potential career ending injury. Once the Cowboys fell behind in the Carolina game they should have pulled Romo, because you knew once we fell behind that the Panthers were going to pin their ears back and come after Romo and with Romo's health we weren't going to come back and win the game.
If I knew that before the injury happened, then why didn't the Cowboys see that happening?. Pulling Romo gets him another 10 days to heal before the next game, which would have had him close to fully healed.
The only way the Cowboys haven't misplayed this whole thing is if Romo faked the injury entirely in order to tank the season, and I don't think that is Garrett' style, or that we are that smart.