Ok, this might be rathe controversial and I am sure most will disagree but......
As much as Robbie has been a good captain and always gives his all, I am concerned about his ability to lead a side if he is playing a position that he is relatively unfamiliar to. In my opinion it would be beneficial to Robbie and the team if he was allowed to focus on the job at hand (concentrating on his role at rightback), without the burden of skippering the side or worrying too much what other players in the team are doing. It is also worth baring in mind that out on the flank he will struggle to have his his presence felt and be as influential a captain as he would be playing more central.
Although stripping the captaincy of anyone can cause lows in team moral, I would see Paul Jones as the perfect replacement to captain for the team: Commanding, composed, experienced and a great influence on the team from centreback.