And the few theological ideas he does have - such as the mass is evil, the Jews are cursed, and Vatican Two is heretical - are due to insanity which schisms inevitably cause.
The insane rind around his entire faux idea of Tradition prevents the quickening grace of the Holy Spirit from restoring life to his soul and leading him to repentance and a return to the Rock.
Yawn.
SPPX (with apologies to St. Pius) are not coming back. They say the church hierarchy has sworn allegience to Satan, the Cathechism of the Catholic church is overflowing with heresies and the church has delibertly distorted and taught heresies (such as NFP and the correct understanding of no salvation outside of the Church). And that's just the mainstream ones. Why would they come back?
Then there's folks like Williamson and Tissier de Mallaraise. Williamson has been delivering gems for years now, such as it is a sin for women to wear pants and women are not capable of higher learing.
http://www.sspx.ca/Documents/Bishop-Williamson/September1-2001.htm He also blames the government for 9/11, Oklahoma City and Pearl Harbor. http://sspx.ca/Documents/Bishop-Williamson/September1-2002.htm
Tissier claims that not one Jew perished in the gas chambers of Hitler. http://jloughnan.tripod.com/sparwill.htm
These guys belong at DU, they won't be comfortable in full communion with Rome. They are filled with way too much hate and anger. They're not coming back.