Schneider is acutely aware of the audiences listening to this discussion between himself and Vigano, and he's highlighting the line between them for a specific audience (the R & R group) by quoting Archbishop Lefebvre.
Vigano's response to this will be very important. Does he "apply the gas" and follow steadfastly to the conclusions his thought practically necessitates - a conclusion sympathetic to, if not agreeing outright with, the Sedevacantist position -, or does he "tap the brakes" and try to avoid the road unfolding before him, and disappointingly (in my view) abandon the journey toward confronting the anomalies (ahem!) presented by the ecuмenical council of V2 and Catholic doctrine regarding the papacy/Magisterium.
The exchange between these two is the type of exchange by those with authority in the Conciliar Church that we've been waiting for.
Great points. Schneider's letter is as long-winded, contradictory and ambiguous as V2 itself. The "positives" listed from V2 are a joke. Then he repeatedly says that the council has many problems, but since it's not infallible, that it's not contradictory of Tradition. Yet his conclusion is we must still have an "attitude of respect"? Why? For what purpose? Schneider's logic is ridiculous.