I'm not sure I understand your objection. According to +Sanborn's position V2 did not come from the UOM as defined by Fr Cekada because Paul VI was not a Pope and the bishops at the Council were not Catholic hierarchy. This, although I don't endorse this position, seems perfectly consistent to me (erroneus - very likely, but not inconsistent).
My objection lies in the lengths +Sanborn, Fr. Cekada and apparently all Cekadians will go to in order to justify their opinion in their attempt to be consistent. It amounts to one fallacy leading to another and to another, even to the point of denying contradiction where it obviously exists, and only for the purpose of justifying their opinion about, as Fr. Cekada states it, "the pope problem". That is what it's all about, it all revolves around and points directly back too, "the pope problem".
Here in the picture below, according to Fr. Cekada, is the UOM, that is, the pope and all the bishops together in Council, albeit at V2.
If the V2 popes, were not popes, and the bishops were not bishops, hence the V2 UOM was not the UOM, then all 2500+ of them were not the UOM *before* entering the Council in 1962. They all defected or otherwise lost their offices on account of their heresies sometime before October 11, 1962, which was when V2 convened.
1) When exactly and 2) what heresies exactly did they *all* profess which no one knew about that caused them ipso facto to lose their offices before 1962? It had to happen before the Council because per Fr. Cekada, once they are in Council, "they are always free from error". And by now, 53 years later, certainly there is some kind of evidence, however weak or strong it may be, to substantiate such an obviously absurd claim.