In Ordinatio Sacerdatolis JPII certainly used the formula that was understood to be necessary for a pope to exercise the charism of infallibility. Cardinal Ratzinger said at the time that it was not an infallible pronouncement because it wasn’t actually in question.
On Unam Sanctam I don’t think consulting a bunch of internet canonists is going to help much. I will say this though, “it is absolutely necessary for salvation that every human creature be subject to the Roman Pontiff” may not be saying exactly what you think it says. It is absolutely necessary for British citizenship for every human creature to be subject to the reigning monarch... doesn’t mean you have to like it or even acknowledge it. You could probably even vociferously deny it, wouldn’t actually change anything though.
Maybe my memory is faulty but I seem to remember Cardinal Ratzinger affirming the infallibility of Ordinatio Sacerdatolis.
On Unam Sanctam I don’t think consulting a bunch of internet canonists is going to help much. I will say this though, “it is absolutely necessary for salvation that every human creature be subject to the Roman Pontiff” may not be saying exactly what you think it says. It is absolutely necessary for British citizenship for every human creature to be subject to the reigning monarch... doesn’t mean you have to like it or even acknowledge it. You could probably even vociferously deny it, wouldn’t actually change anything though.
Thanks for your non-answer. :-)
I'll be gone for a few hours but will attempt to research the Cardinal Ratzinger - Ordinatio Sacerdotalis thing later on.