Pretty much agree with all of this, I have a strong hunch, particularly based on Vargas' quotes as he was leaving town, that he and management are far from being on the same page, and that his individual work hasn't yielded the desired results as of yet to the point that it was time to ship him out for a while (and recall that Vargas has gotten advice from David Ortiz in the past).
And sure, Vargas isn't a blue chipper, but there's a lot to like in his potential package at the plate, and for a team that will have some looming payroll dollar issues a few short years from now with their actual blue chippers and re-upping some vets, he will be either- more valuable in a cheaper for longer scenario, or more marketable in trade if he has more available low wage service time, should he blossom in the next couple years.