The Holy Father is apparently meeting with the head of the Society of St Pius X on August 29 to the discomfiture of some of its more more extreme leaders. Apparently they are asking for a universal indult (fine) and the lifting of the excommunication on Lefebvre (hmmm). What is the point or meaning of lifting an excommunication on a dead person? It cant make any difference to him. It would seem an odd thing to do in the light of his obvious disobedience. Presumably the SSPX see in it an implicit concession that the wickedness of Vatican II and Paul VI was so great that this was ok. If so, that seems a good reason not to agree to it even if it is possible. See: letter by Paul VI in French, longer and more important one in Latin (English translation), and Apostolic letter of John Paul II.