So the Pope said something like this:
There may be a basis in the case of some individuals, as perhaps when a [male?] prostitute uses a condom, where this can be a first step in the direction of a moralization, a first assumption of responsibility, on the way toward recovering an awareness that not everything is allowed and that one cannot do whatever one wants. But it is not really the way to deal with the evil of HIV infection. That can really lie only in a humanization of sexuality.
And people think this is an endorsement of condom use to help stop the spread of HIV. But that just seems a bad interpretation. It seems to me that what he said is rather like saying the following about cheating on your partner:
There may be a basis in the case of some individuals, as perhaps when your partner has sex with his secretary, where this can be a first step in the direction of an understanding, a first assumption of recognition, on the way toward recovering an awareness that your relationship isn’t working and that you can’t go on like this. But it is not really the way to deal with problems in your relationship. That can really lie only in a humanization of relations.
In other words, all I think he’s saying is that if someone uses a condom, that’s still a bad thing, but sometimes people do bad things for good reasons. But maybe I’m missing something. And no, I don’t really know what that last sentence means either.