more on the split between tiger and butch

Well, I hate to dwell on the Tiger-Butch split, but the more I hear about it, the more it makes me think there was some serious rift between the two. Tiger says he and Butch are still friends, but he won't ask him for help. He in fact called Butch to tell him to congratulate Adam Scott. And, when interviewed by the press, Butch said that he's never seen Tiger struggle with his swing the way he has now. Wow.

Possible theories:
(A) Butch and Tiger had a difference of opinion on the swing mechanics;
(B) Butch and Tiger had a difference of opinion on Tiger's practice ethic; or (C) Butch and Tiger had a difference of opinion on whom else or how many others Butch was coaching; or
(D) All or some combination of the above.