Well Tuna, I'm going to go out on a limb and say that the 2nd decision was probably not up to the PD in question. I don't know Kris Abrams, but in my *mumble mumble* years in the business I've known very few PDs who would fire that many talented, experienced on-air talents in such a short time without a corporate gun to their head. Getting rid of both the morning and afternoon shows of two well-performing stations is a major programming decision, and these days major programming decisions are not made locally.
As for the ratings performance of the remaining staff, I'm wondering if, somewhere in the back of their minds, the former diary-keepers and now PPM holders can somehow sense that those people on the air have had their morale destroyed by endless Corporate Bull S**t, and the numbers reflect that fact. At least that's my pet theory.
As for the Christmas music thing, I'm inclined to believe that one was dreamed up at a corporate level. I mean, these are the same geniuses who gave us "FREE-FM," fer cryin' out loud. Only such brilliant programming minds could hatch a plan to essentially take one of the best oldies stations in the country, change it's format for over two months, and think nothing bad would happen.