Yes, the Orioles did get rid of John Miller. So did ESPN. No idea why either of them would as he rules.
Angelos fired Jon Miller in 1996 because he was often too candid for him, citing a desire for a broadcaster who would "bleed more orange and black."
Miller now does SF Giants games. I won't tell you what color they are.
As for ESPN, I think they really wanted Joe Morgan gone, but axed the team. They offered Miller the radio gig, but he said no thank you and now just works the Giants games.
He really is a pleasure to listen to.