Well, sspx.org has posted the same letter in a clearer translation, I think (link here
A hoax: letter of
37 French priests
3-7-2013 | LA PORTE LATINE
A letter of protest against the SSPX's position vis-à-vis its relations with the Holy See was recently published anonymously on the Internet, purportedly being composed and signed by 37 SSPX priests of the French District.
This press release from the District Superior of France, Fr. Regis de Cacqueray, explains that an investigation into the matter has proven the letter is a forgery.
Communiqué of the District Superior of France:
Correction concerning an anonymous letter
A letter allegedly signed by 37 priests of the District of France was published a few days ago on an anonymous website.
After taking the time to examine and to try to verify the document, we are now in a position to declare that it was a forgery.
Although it is unfortunately true that some priests in fact resorted to anonymous and seriously subversive schemes against the authority of the Society, going so far as to try to attain the resignation of its superiors, they represent only a very small number.
Three of them had to be relieved of their apostolate immediately.
We express the sorrow that this incident causes us, which is all the more intense because their attitude has no objective foundation whatsoever. These priests allowed themselves to be carried away by an irrational mistrust of the authorities of the Society whereas the latter are only continuing their role of preserving and defending the Faith in the grave crisis that the Church is going through.
In this month of March, as the Society of St. Pius X consecrates itself to St. Joseph, it places its trust more than ever in the supernatural help that the Patron of the Holy Church has never failed to obtain for it.
Whatever may come of this trial, the Society will serenely continue its apostolic work, faithfully following the line set out for it by His Excellency, Archbishop Lefebvre, its founder, so as to restore all things in Christ.
Fr. Regis de Cacqueray,
District Superior of France
Suresnes, March 7, 2013