Wouldn't be at all surprised to see Wideman take the RD spot behind EK and Ceci. He's a right-handed puck moving defenceman and those are hard hard to come by.
I'm a big Gryba fan but his game is similar to Boro's and the bottom pairing desperately needs someone who can make that exit play regularly - we all know that Boro and Gryba get hemmed in regularly and need a lot of support from the forwards, when they don't get it they struggle b/c they both need the easy play.
If Phillips retires this summer, and I feel like he will, heck, maybe the team carries extra D again. But a move seems likely and I think Wideman is going to get signed. Maybe a Boro type future one-way deal, but to something.
Sometimes we look at these situations as negatives, e.g. "oh no we have too many NHL caliber goalies!," but it sure is nice to have so many able bodies.