Fr. Gregory Hesse (+2006), Doctor of Sacred Theology and Canon Law, gave a conference at St. Michael’s Church (run by Fr. Hector Bolduc until his death in 2012) in Wisconsin in 2001. In this conference, Fr. Hesse says that representatives from several pseudo-Traditional groups (FSSP, Dom Gerard Calvet, Michael Davies, Una Voce, etc.) met earlier that same year to decide what should be done with the 1962 Missal. According to Fr. Hesse, these representatives agreed that the 1962 Missal should be changed to the 1965 Missal with the adoption of the Novus Ordo calendar. Yuck! So much for these groups trying to preserve the Mass of all time; rather, regardless of any good intentions, they worked to destroy it!
Here is the relevant extract of the conference. You can directly listen to the audio by left clicking on the “Play” button. If you prefer to download the audio file to your computer, right click the “Play” button and then left click the “Save audio as” option.