In an odd way, I think he did the right thing. In the world of music, massaging the ego is usually lesson one. There is an eminent Russian conductor encamped at a private home in Brookline, and he is fuming. In an extremely rare public flare-up in the outwardly genteel world of major symphony orchestras, Gennady Rozhdestvensky, the 77-year-old maestro who is one of the last living links to a...