Clodovis Boff on Liberation Theology

Archbishop Mueller has spoken recently about Liberation Theology, he spoke in rather precise terms, it wasn't exactly an endorsement but a call for a acceptance of it as a significant strand in 20th century theology. In many ways Liberation Theology has moved away from the Marxism of Gustavo Gutierrez and Leonardo Boff its founders. It was this that was condemned in the CDF documents, Libertatis Nuncio (1984) and Libertatis Conscientia (1986), not the idea of 'Christ the Liberator' or even 'Christ who brings Good News to the poor', this is after all a keynote of Papa Bergoglio's morning homilies. The CDF's concern was the replacement of the Gospels with the Communism.
Clodovis Boff rather famously broke with his brother Leonardo some years ago Eponymous Flower has a short piece on Liberation Theology and carries this quote from him: 

"In the two documents published by Cardinal Ratzinger, he defended the original core of liberation theology: the commitment to the poor because of the faith. At the same time he criticized the Marxist influence. The Church can't do this. It's not like a civil society where people can say what they want. We are tied to a belief and if someone professes another faith, he closes himself from the Church. From the outset, it was clear the importance was to make Christ the foundation of all theology. In the hegemonic discourse of liberation theology, however, I have noticed that faith in Christ only appeared in the background. The anonymous Christianity of Karl Rahner was a great excuse to neglect Christ, prayer, the sacraments and the mission in which the focus was only on the change of social structures. "