The current Catholic Church is the true Church! Priests sinning, giving bad advice, or creating scandal does not invalidate the true Church
True, one can hold office but be a reprobate......even Saul and David sinned.David was both priest and king....
Whether Joseph Ratzinger as a man is sinning or hold ambigous positions is not the point.....also, as a cleric, no lawful authority has ever judged him......
example-lets say after Luther's public excommunication,a majority of Cardinals at a conclave voted for him as Pope......then he would not be valid........
lets say the same Cardinals instead voted for Erasmus..he held very questionable views, but never publicly denied dogma and no tribunal,etc ruled him a heretic......
Erasmus would not be best choice in our eyes, but maybe the fact God put in on Papal throne was for his own betterment.....
B16 after all has made some moves toward Tradition and away from V2........lets hope he continues......
we ignore his private musings and do not follow him in doing sin, say pulling a Jp2 Assisi prayer gathering.......
hope my points, faulty as they are, are making some sense.....