“The incontestable fact that Pope Benedict XVI has maintained some claim on his papal munus proves absolutely, that he remains in full possession of the primacy as a result of the conditionality of his renunciation of the munus. The reason for this is that the nature of the papacy is such, that the actual holder of the office possesses the primacy in virtue of the Petrine munus which he possesses in its absolute and indivisible fullness, so that a pope who would attempt to renounce the papal office by an act that lacks a total and unconditional renunciation of the munus, by the very act of his stipulating a qualifying condition of the renunciation, whereby the intention is asserted in the act, to retain anything whatsoever of the munus he received from Christ upon his election, albeit only ‘spiritual’ and not jurisdictional, nullifies the act in virtue of the fatal equivocation brought about by the logical opposition of contradictory assertions made in the act.”
Kramer, Paul. On the true and the false pope: The case against Bergoglio (pp. 350-351). Gondolin Press. Kindle Edition.