I do not think Bard would have been an effective closer. I think the Sox lost faith in his abilities as a closer and that in part fed into the decision to transition him. At the time of his collapse I commented that he had always been up and down, that the Sox brain trust had always been struggling with his inconsistency and trying to find ways to overcome it even as a full time reliever. In addition his collapses were always collapses. He never just sort of went into a minor funk. He always had some form of a meltdown when things went south.
So I was less inclined to look at that mess as "look at what the Sox have done to Bard". I looked at it more like, "how could you plan around having this guy in your rotation?" In fact, how could you stick Felix and Bard in the 4 and 5 hole, put a bunch of scrub pitchers in Pawtucket as depth and basically consider it a job completed.