In the end, if you are the CO, you have two choices - stay on the bus (stay with the company and the project) or get off. At the end of the day, the CO must make the choice to stay or go if all they find themselves doing is objecting. Things change and sometimes something that once worked no longer does. As the leadership, they too must make that same choice. Is this person dragging the team down with the constant push back or are they truly helping everyone avoid pitfalls. Careful documentation, mentoring, and working closely with the CO will often either help them figure out their place or support leadership in doing what needs to be done. Saving Changes...