If you're refering to a statement made on the Paradosis discussion list, I think it's important to note the comment made by the Cyprianite (if I'm looking at the right one) amounts to "don't believe everything you read." I don't know if he was refering to the encyclical itself, or some other small point. Someone had stated that a "synod" or council had produced the encyclical, which gives the 1935 encyclical undue authority. From what I've read, most of the documents produced during that era were not synodal at all, but mere signed statements: proclamations, declarations, confessions. Perhaps he was being contentious about that point.