Heh. I already explained the Dr. Lamont thing. In St. Robert's view, the Pope loses his office after one or two warnings from many Cardinals and Bishops, after there is no longer universal acceptance, but before the Church makes the final declaration. I explained this by citing Fr. Ballerini. There's no suggestion in the Doctors of any Pope losing his office without any kind of warning, or while still having universal acceptance. That's a modern novelty, that arises from either ignorance of or unwillingness to deal with the UA teaching.
Your last statement is quite laughable, really, because I told Siscoe about Universal Acceptance, while they were still making the rather weak arguments from pertinacity alone some 7 odd years ago, but I'll let it pass. A sede acquaintance recently told me, an SSPX Priest in Australia told him, in the 90s, and for most of the first decade millenium, the sedes had the better arguments. R&R arguments were quite poor, some were incredibly weak. Many R&Rers couldn't answer sede arguments and believed them to be incontrovertible. It was the re-discovery of Universal Acceptance teaching in Cardinal Billot, St. Alphonsus et al that turned the tide in favor of R&R once more.