This is not the practice of the Catholic Church. When Tony Blair was Prime Minister and Anglican he endorsed abortion and same-sex marriage. When he became a Catholic that Vatican was asked if he would be required to publically recant. Pope Benedict himself said, “no”. The official response from the Vatican was that they knew Mr. Blair’s position on these issues and that they believed that he still has some developing to do in the faith. That was it.
We have never heard Tony Blair recant anything in public or asked to do so by the Church. Nor was Cardinal Law of Boston asked to recant anything after the sex abuse scandal broke out. Although the good Cardinal was not personally guilty of abusing anyone, he was charged with covering things up and poor administrative judgements in this regard. Cardinal Ratzinger said that this was more media hype than reality. It was only later that Ratzinger realized that it was a big problem. Nonetheless, he transferred the Cardinal to a Vatican post, but did not ask the Cardinal to recant.
Today, Fr. Hans Kung, stands by his position that the infallibility of the pope is a questionable dogma. He has never been asked to recant. He is a priest in good standing with the Church and a good friend of Pope Benedict XVI. Several weeks after Benedict’s election, the Pope invited Fr. Kung to visit with him at Castle Gandolfo. They discussed the days when they worked together at the university. The Pope also approved Fr. Kung’s new project to work on developing a universal ethic for ecumenism. This is prublic knowledge. The meeting took place in 2005. I’m not sure if Fr. Kung is still alive, as he is almost as old as Benedict or what happened with his project for a universal ethic.
The point is that he was not asked to recant, was never suspended from the priesthood and has been given permission to begin a project on ecumenism by Pope Benedict. The only thing that he lost was the license to teach as a Catholic Theologian. He may teach as a theologian, but may not call himself a Catholic Theologian. Therefore, he may not hold a teaching post that requires that the theologian be Catholic.
Public recanting of sins is not a practice of the Church today.
JR