I've known Frank most of my life. He is one of the nicest people you will ever meet. He also has a huge chip on his shoulder, and it is one of his own making.
The Royals have given him job after job after job to keep him happy, but it's never been enough. They don't owe him a managerial position. They hired John Wathan. They hired Hal McRae. I'm certain there is a reason they never hired Frank.
Eventually, you realize that he's always going to be a malcontent, and you have to part ways. It sucks. He was one of my heroes growing up, and then he and his family became close friends of mine. None of this changes the fact that he felt that he was owed something that he wasn't.