Is God the ultimate arbiter?

I was reading intensively these few days about the Vatican enraged by magazine's confessional expose which was reported by Reuters on Jan 31.

Differences between official Roman Catholic doctrines and what priests told Mr Riccardo Bocca, an investigative reporter for L'Espresso, were had been found after a series of fake confessions.

Over the issue of euthanasia, a priest told Bocca not to worry too much because God would be the ultimate arbiter.

In another confessional box he faked being HIV positive and was told by a priest that whether or not he used a
condom in order not to pass the virus to the woman he loved was "a very personal matter of conscience".

On homosexuality, one priest told him: "Well, homosexuality is a tendency which is a valid human expression. There are even homosexual priests and lesbian nuns." Asked if he should openly declare his homosexuality, the priest told him: "Generally the best thing to do is to be yourself. Come clean. Do what the English call ’coming out’."

The Church teaches that homosexuality is not a sin but homosexual acts are.

I've also hopped over to read the related forum regarding to "is masturbation a sin?"

But then, I'm blurred in the din of the sin world over this equation - using of condom = masturbation = prostitution = homosexual act = the sin of wasting seed.

Would god by then be the final arbiter considering sin or sinless of these acts!