In a Blog post entitled "Bishops take 'strong exception' to marriage ruling," Father Geoff Farrow writes, "In 1975, the Sacred Congregation for the Doctrine of the Faith (the Church's watchdog for orthodoxy) produced a document entitled 'Declaration on Certain Questions Concerning Sexual Ethics.' In this document, they made the most remarkable statement. They stated that there are 'homosexuals who are such because of some kind of innate instinct.' Of course, that statement was made under Pope Paul VI, both John Paul II and Benedict XVI have/are backpedaling furiously on that statement. But since the 'Church' (pope/bishops) can never admit a mistake, they simply ignore 'inconvenient' statements or, 'reinterpret' them away."
In the Declaration Fr. Farrow refers to (Persona Humana), this is what the CDF had to say: "A distinction is drawn, and it seems with some reason, between homosexuals whose tendency comes from a false education, from a lack of normal sexual development, from habit, from bad example, or from other similar causes, and is transitory or at least not incurable; and homosexuals who are definitively such because of some kind of innate instinct or a pathological constitution judged to be incurable." (No. 8).
In 1986, the same CDF - responding to those within the Church and without who twisted this paragraph to promote the homosexual agenda - had this to say in its Letter to the Bishops of the Catholic Church on the Pastoral Care of Homosexual Persons: "In the discussion which followed the publication of the Declaration [Persona Humana)..an overly benign interpretation was given to the homosexual condition itself, some going so far as to call it neutral, or even good. Although the particular inclination of the homosexual person is not a sin, it is a more or less strong tendency ordered toward an intrinsic moral evil; and thus the inclination itself must be seen as an objective disorder." (No. 3).
The CDF continued: "It has been argued that the homosexual orientation in certain cases is not the result of deliberate choice; and so the homosexual person would then have no choice but to behave in a homosexual fashion. Lacking freedom, such a person, even if engaged in homosexual activity, would not be culpable.
Here, the Church's wise moral tradition is necessary since it warns against generalizations in judging individual cases. In fact, circumstances may exist, or may have existed in the past, which would reduce or remove the culpability of the individual in a given instance; or other circumstances may increase it. What is at all costs to be avoided is the unfounded and demeaning assumption that the sexual behaviour of homosexual persons is always and totally compulsive and therefore inculpable. What is essential is that the fundamental liberty which characterizes the human person and gives him his dignity be recognized as belonging to the homosexual person as well. As in every conversion from evil, the abandonment of homosexual activity will require a profound collaboration of the individual with God's liberating grace." (No. 11).
If there has been any "reinterpretation" of the Church's teaching, it has been done by dissident "Catholics" such as Fr. Geoff Farrow who have their own agenda. But Fr. Farrow has not been given the mission to instruct the faithful in "all that serves to make the People of God live their lives in holiness and increase their faith" (Dei Verbum, No. 8). That mission has been entrusted exclusively to the divinely instituted pastoral magisterium of the Bishops in union with and under the headship of the Holy Father, Peter's successor and Christ's vicar.
If that is too much for Fr. Farrow to bear, perhaps he would be more at home in the Episcopal church? While he's pondering on this, perhaps Father might care to reflect carefully on the wording used in Persona Humana, No. 8. An instinct is properly defined as "The innate aspect of behavior that is unlearned, complex, and normally adaptive." Adaptive means changeable.
Attempts to demonstrate that the homosexual orientation or inclination is biologically determined or somehow innate and immutable have failed. See here.