It might just be that they've discussed this topic internally at length and Jerry's comfortable divulging their thought process because he just can't keep his mouth shut because he's Jerry Jones.
In any event, this is interesting:
“Beginning about right now, you get over in that area of the individual’s situation and his own ability to heal and his own ability to tolerate (pain),” Jones said. “He’s in that stage right now. Hopefully, soon, he’ll be out of the danger stage relative to his spine -- probably two to three more weeks -- and we can see how far he wants to go by his own volition.”
Because, I don't think even the hardest-core "I love Tony Romo, but..." fan would fail to recognize that Tony's going to want to come back as soon as the long-term spine danger is not an issue. Tony's 'volition' will be to play immediately through the pain.
I still think we're looking at the bye week return, but it will be fun to watch. Maybe Tony sees Dak improving and he ups the time-table a bit.