is no big deal, it happens in all sports, in all walks of life.
The manner of the split, that's what people will talk about. Why announce it now, what was the need, why couldn't it wait until after the race weekend? What seems fact is that Rossi made the decision some time ago and that it had leaked out through the media in his home town, so if that's true he's not kept it as close to himself as he should have. The leak appears to have forced him into telling Burgess and then announcing it officially before 'the net' gets a proper hold of it and Burgess finds himself the subject of some awkard questions for which he'd have no answers.
What's confusing is the reason. Rossi has blamed just about everything he can think of for his lack of success over the last few years. After Ducati, he finally has a good bike under him again but has been hammered by his team mate. He still appears to accept that he isn't fast enough, therefore what's left to blame or change? But how does changing crew chief change his chances of finding more performance, either from himself or from the bike? This is what doesn't make sense. He says he wants to try new ideas, to work in a different way. It would seem Burgess hasn't been consulted on what this 'different way' is and as bike set-up is purely down to the requirements of the rider, why does he think that Burgess and current crew can't follow this 'different way' . Personally I can't see what difference a new crew chief will make. The single most important aspect of a team is a capable bike. Put a good rider on it and they will win. All of the mechanics in the top echelon of bike sport know what they are doing and if you shuffled them around the teams, I'd bet the same riders would still be winning. Rossi has the bike, it's a clear winner, he's a fast rider but not the fastest and he seems ever more desperate to find some sort of miracle cure for the fact that he isn't quick enough.
What I think is wrong is the way it has been handled. I've no particular feelings towards Burgess either way, sometimes he comes across as straight talking but affable, sometimes he's been as ungracious as Rossi in his remarks about other riders or teams. However, Rossi and he have been together for some time and I think the way that Rossi has handled it is piss poor. If it's true the story leaked from Tavulia, then realistically there's only one source who has told one too many people.
A shabby way to end a partnership