[6] Father Aulagnier, for example, published through Montfort Cultural Association a book in Portuguese defending Archbishop Marcel Lefebvre and his traditionalist claims.

[7] In August 2004 Father Philippe Laguérie was expelled for having complained that the Society of Saint Pius X had serious problems which discouraged priestly vocations in its seminaries.

He carried out the operation successfully at Bordeaux, obtaining the approval of the city council, but not of the archbishop's office, to take over the church of Saint-Eloi in January 2002.

[12] On 8 September 2006, the liturgical feast of the Nativity of Mary, they, together with Father Henri Forestier, who also was stationed in Bordeaux, formed the Institute of the Good Shepherd,[13] a society of apostolic life in full communion with the Holy See.

Several seminarians joined the new fraternity, some of them close to ordination, and Cardinal Darío Castrillón Hoyos, who signed the decree approving their constitutions for a preliminary experimental period of five years,[14] promised to confer the sacrament of orders on them.

Father Laguérie had declared in March 2006 that agreement with the Holy See was required by the very constitution of the Catholic Church, and he asked his parishioners to take note of the signs of good will on the part of Rome and of its intention to put an end to the doctrinal turmoil and the scandals of 1960-2000.

"[16] The members of the institute may engage in a criticism of the Second Vatican Council that is serious and constructive and in accord with Pope Benedict XVI's address of 22 December 2005 to the Roman Curia,[17] while recognizing that it is for the Apostolic See to give the final authentic interpretation.

[24] As of 2023, the Institute has 61 priests, 46 seminarians and is active in nine countries (France, Poland, Italy, Portugal, Brazil, Colombia, USA, Uganda, Australia) over four continents.

[26] There were unconfirmed rumours in February 2008 that Cardinal Francisco Javier Errázuriz Ossa, the Archbishop of Santiago, Chile ordered the Institute to cease celebrating the Tridentine Mass and leave the country.