Yeah, I'm calling BS on the ratings claim too. Something else must have happened to just fire him out of the blue like that.
If he was fired because of low ratings (what Murphy has said, FSD has said nothing to my knowledge) I don't think FSD is blaming him for low ratings, but that cost had to be cut because of the lower ratings.
Low ratings = lower ad revenue
Murphy was the only one who was expendable. He carried a larger salary than Elliot, a third studio analyst and guy between the benches isn't needed and with Mickey traveling more a substitute color guy wasn't needed anymore.
Keating, York, Hogan and Thompson work across all FSD broadcasts - not just the Wings - so they carry more value than Murphy. Elliot spent 10 years as an analyst for the Thrashers (and won a couple Emmy's too) and is probably being groomed as Mickey's repacement.