You can put his 'level of play' into question, but one thing that's undeniable is that Romo is a tough guy. He plays through broken ribs, punctured lungs, herniated discs etc.
The injury that he has suffered is minor as I recall another QB having the exact same injury and missing only one game.
The problem is this is another back injury to add to the list of back injuries.
When his career is over, I wouldn't be surprised if he's unable to do basic things like pick up his son. They already stated because of the back surgery he will have to do certain exercises/stretches for the remainder of his life.
I say sit him. At worst, the Cowboys go into the bye 6-4. We weren't supposed to win more than 6 games this season anyway
IIRC the injury heals on its own, and its just a matter of being able to play through the pain.