I don't think Romo has been ready.
What's happening is that Romo is now being allowed to heal at the proper timeframe with an injury like this as opposed to getting him out there at the minimum amount of time possible like we did last year.
It isn't just the healing, the guy needs to get his core and upper body strength back.
Dak playing well allows the team to give him all the time necessary. So if Romo does indeed have to come back in for whatever reason, at least we can rest assured that he'll be 100% physically ready to do so.