Can McCain remember his talking points on gay marriage?

In 2004, McCain strongly opposed the constitutional amendment to ban gay marriage after the Massachusetts Supreme Court had removed the ban in their state:

"The constitutional amendment we're debating today strikes me as antithetical in every way to the core philosophy of Republicans," McCain said. "It usurps from the states a fundamental authority they have always possessed and imposes a federal remedy for a problem that most states do not believe confronts them."
"What evidence do we have that states are incapable of further exercising an authority they have exercised successfully for over 200 years?" McCain said.

In an interview in 2006, he appeared to be sorta in favor of gay marriage, with an unclear qualification:

On the issue of gay marriage, I do believe, and I think it’s a correct policy that the sanctity of heterosexual marriage, a marriage between man and woman, should have a unique status. But I’m not for depriving any other group of Americans from having rights. But I do believe that there is something that is unique between marriage between a man and a woman, and I believe it should be protected.

I think that gay marriage should be allowed, if there’s a ceremony kind of thing, if you want to call it that. I don’t have any problem with that, but I do believe in preserving the sanctity of the union between man and woman.

After getting some advice from another Republican, he went off-topic later in the interview and tried to clarify his stance:

Could I just mention one other thing? On the issue of the gay marriage, I believe if people want to have private ceremonies, that’s fine. I do not believe that gay marriages should be legal.

It was a good thing he clarified that, because that year he had publicly come out in support of Arizona's Protect Marriage Amendment, which stated in no unclear terms:

To preserve and protect marriage in this state, only a union between one man and one woman shall be valid or recognized as a marriage by this state or its political subdivisions and no legal status for unmarried persons shall be created or recognized by this state or its political subdivisions that is similar to marriage.

So that means he's against civil unions, and wants to deprive gay persons from any rights that are similar to the ones married persons have, right?

And just to be clear, openly gay persons don't have a right to be in the military either:

McCain says the law, passed in 1993, unambiguously maintains that open homosexuality within the military services presents an intolerable risk to morale, cohesion and discipline.