The concept of "intrinsic disorder" has a certain internal consistency within the system that gives rise to the term.  Precisely because it does, it underscores that it is not only, not even so much, the church's teaching about homosexuality that needs renewal and revision, but rather the church's entire understanding of human sexuality.  The good news is that the theological, anthropological, sociological, and scientific groundwork is already available; the bad news is that the current teaching is entrenched within a larger framework that claims, incredibly, that the church cannot change its teaching.