Philippe de Chérisey was already probably half way into his usual drunken stupor when he wrote this; and this is not the only such example by him.

For people who do not yet know this, correspondence exists between Pierre Plantard, Philippe de Chérisey and Gérard de Sède dating from the 1960s where they discuss their strategies of conning the public about the Priory of Sion and Rennes-le-Château. This correspondence has been seen by makers of documentaries. The reason why the correspondence has not been published is because legal copyright is held by respective sons – Thomas Plantard de Saint-Clair, Gaspard de Chérisey and Arnaud de Séde. The whole subject matter is built upon hokum.