Hans Zollner, the German Jesuit who has been a leader in the Vatican’s fight against clergy sex abuse, resigns from the Pontifical Commission for the Protection of Minors

Father Hans Zollner, one of the most respected experts and pioneers in the Vatican’s developing fight against the clergy sex-abuse crisis, has resigned from the Pontifical Commission for the Protection of Minors (“Tutela Minorum”) citing disagreements over the way the body is being operated.

“I have noticed issues that need to be urgently addressed and that have made it impossible for me to continue further,” he said Wednesday in a surprisingly candid message published on social media.

The 56-year-old German Jesuit theologian and psychologist had been a member of Tutela Minorum since its establishment in 2014.

The announcement of his resignation was actually made earlier on Wednesday by the commission’s chairman, Cardinal Sean O’Malley of Boston. But the cardinal, who is also…