Dear Torie,
"Yes, I understand, that the Catholic Church thinks that even gay attraction is genetic,..."
Actually, the Church is neutral on the question. It's a scientific question, not a theological question. It's true that some years back, the American bishops published a document that strongly suggested the acceptance of that thesis - that the disorder is at least partly genetic, but one of the legitimate criticisms of the document was that that isn't actually the Church's belief.
"... or sometimes is, that attraction is disordered, and acting on it while perhaps not an 'abomination,' is a sin."
No, homosexual behavior is an abomination, in the view of the Church. Sodomy is one of the sins that cries out to Heaven for vengeance.
"Maybe the notion that God created man in his own image, requires some revising and extending."
Well, Catholic teaching has extended, if not revised the belief that we are made in His image.
Although we are made in His image, because of Original Sin, we have lost our Original Justice, and we are marred, with an inclination often to do that which is evil.
sitetest
Is original sin saying that God wires man to sin? That does not seem Godly.