The Times has an interview with an anonymous performer about the groping incident involving Vittorio Grigolo in Tokyo which resulted in the tenor’s dismissal by Covent Garden and the Met.
The performer was not a chorus singer, as originally reported, but a dancer.
Her colleague supplied some additional detail:
After he grabbed her fake belly during the curtain call, “her immediate physical response was to push him away”, she says. She says a (male) chorus member then intervened to reprimand Grigolo. “But instead of just turning around and carrying on bowing, he grabbed her again and shook the belly, saying, ‘I can touch her like this if I want to.’” She claims Grigolo then tried to square up to the chorus member off stage and said: “I’ll meet you outside.” “It was all very confrontational.”
…She describes  a repeated pattern of unpleasant behaviour in Grigolo’s interaction with company members. “There had been another incident in rehearsal with a different female member of the cast, an actress feeling uncomfortable with a touch and a comment that was made,” she says. “It was that same sentiment of, ‘I can touch her however I want to.’ He knew that his place as a poster boy meant that it didn’t really matter what he did — until it did matter, because it was on stage.”
Full report here.