How far did you think Pat could have gotten under Dale Kennedy at Bozeman? I was surprised that he went to Montana in the first place. If you are a X-C skier, go to Bozeman, but a running talent like Pat, you need a better training environment and he needs to be surrounded by some more talent. If I were Kennedy, I would have released him in a heart beat as well.
I don't know the sitution involving Casey, but I think Kennedy and Weese have a lot to offer and have done great things with Patrick. I myself went from a 9:35/4:25 3200/1600 HS runner to a 14:01 5k under Kennedy. Bozeman is a great place to train, the winters make you tough and the altitude makes you strong.