Aaron Ashby is an awesome pitcher and Murphy is not trying to bury him at all. Ashby's issues have always been all - arm/shoulder/forearm/oblique injuries which have totaled over 300 days on the (IL) from my math as a Brewer. Also, days spent on the (IL) during the offseason are not even counted or associated with the IL stints during the regular season.
Murphy is not trying to bury Ashby, he is trying to keep him off the IL again. In fact Murphy even said about Tobias Meyers, "These kids are not machines where you can buy spare parts and never have them miss a start."