Not at all, Cody is a gentleman. Himself and Shefflin never had a superb relationship, try reading Shefflins and Codys books. Was there animosity between them when he took the Galway job, yes of course, what Kilkenny man would be falling all over a Kilkenny man coaching a team to beat his own county team? The respect is gone. JBM has the exact same attitude.
I would be of the exact same mindset, you don't coach a team to beat your own county unless you are a hurling mercenary, we've have a few of our own as well.