Ladislaus
Bishop Fellay needs to 1) publicly apologize to them, 2) welcome them back to the SSPX with no strings attached and no "hard feelings", and 3) promise to never use the Sacraments as weapons ever again
They have never left the SSPX of the Archbishop. Bishop Fellay, a late edition and never one intended to be consecrated a Bishop has abandoned the heritage of Archbishop Lefebvre.
Bishop Fellay and his gang had to wait until the Archbishop died. They could be more open then about the liberalising and new direction of the 'pious union'.
For many years they wanted the one chosen by Archbishop Lefebvre out of the SSPX.
Their business partner Krah has been influential in the new direction.
Instead of a Traditionalist Catholic priestly Society, the SSPX is now a conservative Catholic, watered down society.
It went from fighting Modernism and the enemies to a Society that collapsed and surrendered. It's not fighting Vatican II, the Novus Ordo is accepted, the new code.
The SSPX with Bishop Fellay as Superior General is the 'Church of Bishop Fellay'. Even Fr Rostand used that title in America.