In "Failure of the Executive Power" (Super Fluma Babylonis), the author assumes that at all times each pope (John XXIII, Paul VI, and John Paul II) acted in what he regarded as the best interests of the Church; hence the criticisms he offers are not intended to reflect on the personal integrity of these popes. Yet, he says, it is possible for a saint to err. What he claims, accordingly, is that each of these popes played a part in the abdication of the Church's authority -- an authority that must be restored if the Church is to exercise the fullness of her sanctifying role in the world.
[Hat tip to Sir. A.S.]