[Unam Sanctam]

You are using the term orthodox, which from the Greek roots, means "correct teaching", in a casual way, not in a precise and accurate way. Your meaning is unorthodox in the sense of "that isn't the way we've always done things". It is misleading to use the term in this sense to refer to the Pope, when it could be misinterpreted to mean that you are calling the Pope unorthodox in a precise sense of the term. The precise meaning of unorthodox relates to doctrine, and it means heretical.

[ultima ratio]

I have always insisted this Pope is unorthodox but not heretical, though he may at times have fallen into a material heresy unwitingly. "Orthodoxy" does, indeed, mean "correct teaching." But as you say, I am using the term in a less strictly theological, sense--to mean "unconventional." But even as you use the term, to be "unorthodox" does not mean to be "heretical". "Heresy" always involves a break with dogma, "heterodoxy" does not.