You say, "St. Paul in his letters also warns the faithful to hold fast to the tradition they received: We command you, brothers, in the name of the Lord Jesus Christ, to avoid any brother who wanders from the straight path and does not follow the tradition you received from us (2 Th 3, 6).
Do you not agree that Leo, and far too much of the hierarchy, had wandered from the straight path? And if they had, was it the duty of the reformers to remain silent? Or to confront error?
You conclude “corrupt” authority but Christ made sure that His teaching and its infallibility (the same infallibility that informed the assembly of the canonical texts) will last till the end of time