Sean's had these meltdowns before. In fact, the biggest one was over the same issue ... in response to the claim that Archbishop Lefebvre had on-and-off been rather sympathetic with sedevacantism. As here, he desperately twisted and warped the obvious meaning of what the Archbishop had said until presented with a couple of quotes that he couldn't explain away. So he stormed off the forum insisting that he would not return until I was banned. Within a couple days, he was noticed posting in Anonymous, and eventually signed up with a new account called something like "Mr. X" (I can't recall the exact account). But the point is that when Sean is argued into a corner, rather than concede, he'll have an emotional meltdown. And then he has the nerve, the very second that he starts losing an argument, to start accusing people of being "emotional" and acting like a woman ... when it's painfully obvious that he's the one who's beginning to lose his grip on his emotions.
I really have found this curious, though, why people get so bent out shape if Archbishop Lefebvre happens to have held an opinion they disagree with. It's perfectly OK to say, "well, I don't agree with the Archbishop on that point". Archbishop Lefebvre was not God. He wasn't infallible. He wasn't a Doctor of the Church. He wasn't even really a theologian. I've disagreed with him on a few things. I've disagreed with Bishop Williamson on a number of issues. That doesn't lessen my respect for either one. That in fact is an eminently manly virtue, that one doesn't make some rational disagreements PERSONAL.
But, unfortunately, many in R&R have undermined the authority of the Magisterium so badly, that they seek these substitutes for doctrinal authority, and they have set up this cult of Archbishop Lefebvre, elevating him almost to divine status (or at least quasi-papal status). They give every idle word of Archbishop Lefebvre more weight than they do the teaching of (what they believe to be) an Ecuмenical Council and 60 years of Papal Encyclicals.