I listened and read both interviews, and here's what I think.
I don't agree with Didier about Brian generally not working for this medal. Brian hit the nail on the head when he said that he should have worked as from July. The truth is, straigt after Turin Brian started working towards his objective. He has matured a lot, he has tried to adapt to the system (maybe a bit too much), he has worked on his weaknesses. My opinion is that the problems really came when he split from JCS. Firstly the main problem seemed to be that JCS wasn't good at strategic thinking during competitions. But Brian said that there were other training problems too - I'm surprised, but I'm not going to contradict him. The split was quite ugly because the first person to mention was Didier, and Didier can be quite harsh. And as usual, Brian followed-up. Then there was the issue of finding a new coach. Brian Orser seemed an obvious choice - his personnality his perfect for Babou. The problem was he didn't want to leave his home town, and I can understand that. If a skater doesn't feel well in their personnal life, then they can't be good on the ice. Maybe he should have tried to have some arrangement with Orser like Mao has with TaT. But we don't know what exaclty was said during the negociations so it's impossible to know upon what basis Brian made his decision. The real problem was, I believe and maybe I am wrong, chosing Laurent Depouilly. The two have worked together before and it didn't work - mainly because of the immaturity of both at the time. Brian has definitly matured since then and Laurent probably has too. However Brian needs somebody whose personnal strength makes them more imposing than Brian - he needs that kind of presence. And Laurent just doesn't fit that description. I'm not sureeither that he's the kind of coach for a world champ.
Didier has been a huge rock for Brian over the years, but sometimes I feel as if he can be a drawback. His strong personnality and his honesty are good things, but I really don't think that more or less giving Brian an ultimatum or making certain issues public are very good ideas.
I agree that Brian should stay with D/S, at least for next season. What's interesting is that Didier mentioned that there was talk of getting Brian to work with Kurt again. I think it's useless to speculate on the whole Brian/Kurt thing as there are loads of rumours, but if iwhat Didier said is true then's it's a real shame that it didn't happen as Kurt would have been that mental strength that Brian needed.
I'm not surprised that Brian has had personnal issues, I suspected as much. I don't know what they are and I'm certainly not going to speculate on his private life, but maybe going abroad a bit would have been a good thing.