Just to get the conspiracy theory straight, and I hope I am paraphrasing lex vaguely accurately, the substance of it was I think that the particular exotic multicompound tyre the ducati was designed around was taken away from ducati in 2008 before the control tyre came in officially in 2009, probably at dorna's behest. I agree with you and said so at the time that I was not convinced that bridgestone were all that reluctant to supply valentino, but I think they were genuine about wanting tyre competition to continue, and the lack of this may be a strong contributor to them apparently departing the sport.
Interested to hear what kropotkin says about pirelli in WSBK. I didn't follow it as much last year with bayliss and spies no longer there , but the pirelli control tyre previously has not lasted for the whole race, which contributes to better races, and I have always wondered whether this was more or less deliberate, as the flammini brothers are bike racing guys who understand racing. One of the problems with bridgestone's control tyre for me is that it is too good and lasts the whole race, and takes away from previously required skills of preserving tyres and riding on worn tyres, another way in which it doesn't help valentino.
All the stuff about valentino being in decline is stuff and nonsense in my view, unless the shoulder injury is permanently disabling. To my mind the 2008 season was his best season ever, and he rode pretty well in 2009 as well and won the 1st race in qatar last year prior to the injury. Jorge also rode remarkably well last year though, and it was up to valentino to remain healthy for the season as it was to mick doohan in 1992.