The former executor of the estate of violinist Isaac Stern paid himself outlandish fees, sold off assets without authorization, and effectively cut the Stern family out of the estate, according to a $2.25 million lawsuit filed by the late performer’s children. The suit further claims that the executor worked in collaboration with Stern’s third wife to deprive the family of their rightful inheritance. “The court documents open a window into the troubled affairs of a man known largely for his musical achievements.”