There is literally zero excuse to take Steven Wright out of the rotation until he starts makimg mistakes -- absolutely none whatsoever. Especially in favor of Joe freaking kelly who hasn't even come close to earning that kind of special consideration. There is no reason at all whatsoever to believe that Joe Kelly currently deserves a rotation spot over Steven Wright under any standard of measurement that is actually sane. That may change, but until it does, let's see if Kelly can turn his excellent stuff into a high class power reliever, the way Andrew Miller (eventually) did. That's a better use of both Wright and Kelly based on what we know right now.
Before making such bold statements, perhaps you should take a moment to open up Kelly's baseball-reference or fangraphs page and check to see which hand he throws with.I'm sure Wright would be willing to go to the pen, but I'm not convinced it's the best use of either man. I think the correct move is to hold Kelly in the bullpen because Kelly in the bullpen, if he could adjust to a bullpen role, is a far more valuable commodity, as I attempted to illustrate with the reference to another power lefty who couldn't figure it out in a starting role.
Plus, there's really not a lot of evidence that Kelly is likely to be any better in the pen. That said, unlike when that piece was written, the Sox are not out of contention and Wright has been incredible so far. If the team is looking at all of their pitchers being healthy and with Wright, Owens and Rodriguez all performing, the best way to control assets until someone can be moved for a good package is for Kelly to move to the pen and Owens to be demoted. Of course, there's a pretty good chance this works itself out before we get to that point.