Yep.
He doesn't want to admit that heretics lose membership, so he keeps switching the argument from 'catholic' to 'member' and back again, to avoid the issue.
If I had to guess, it is because of the Conciliar pope problem. For whatever reason he holds that there is absolutely no possibility of them not being true popes.
They clearly do not "profess the faith", which Pius XII taught was necessary for Church membership. But how can a Pope not be a member of the Church? Or not be Catholic?
In order to square that circle, he must come up with two novel theories:
1)It is impossible to cease to be Catholic
2)It is impossible to lose membership in the Church..you just become a "separated member"...separated from the Church...but somehow still a part of...and somehow still inside...
Instead of applying what Pius XII really taught to the Conciliar popes, he is forced (in order to maintain that they are true popes) to work backwards from the assumption they are true popes to create a novel understanding of what Pius XII taught