I think today is Romo's worst day of his professional life. To fuck up the hold on a winning field goal is just very hard to bear. But you can't blame Romo on the entire Dallas team losing. He didnt fumble the ball, he didn't not catch the catches that were needed to be caught. His string of bad luck was just one of many for the team.
When the new season starts, and he is back winning games, people will forget, but for tonight, the city of Dallas is in a low mood indeed.