“One of the most important directors in the ballet world, Martins, 71, said he would temporarily step away from both NYCB and its affiliated School of American Ballet, which he also heads, in a statement to The Washington Post on Thursday afternoon. He issued the statement after The Post sought Martins’s comment on a previously undisclosed claim by former NYCB soloist Kelly Cass Boal that Martins behaved violently toward her.”