According to these sources, Grigorovich has retained the rights to all manifestations of S.T.

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Successive artistic directors have been unable to overcome the resistance from dancers and teachers still loyal to Grigorovich, but Filin was seen as capable of bridging that gap.

NPR: Dancer Admits Being Behind Bolshoi Chief Attack

Filin is the sixth artistic director at the Bolshoi since the legendary Yuri Grigorovich, who led the dance company for three decades, resigned in 1995 after losing a protracted dispute with theater management.

NPR: Dancer Admits Being Behind Bolshoi Chief Attack