Posters here have a tendency to way overblow Fr. Kung’s differences with the Church. He remains a priest in good standing, remains a professor of theology at the University of Tubingen and (like it or not) remains one of the most influential theologians of our day. Kung was stripped of authority to teach as a Catholic theologian, i.e. to represent that he teaches on behalf of the Church, because he has publically questioned papal infallibility. He has not been declared a heretic, an apostate or any of those things. He disagrees with the Church principally in the area of the extent of the Pope’s authority. I don’t think anyone is seriously considering excommunicating him. (and I agree doing so would be a big mistake)