I'm trying REALLY hard not to make a joke about the fact that you used "blow" and "paying through the nose" in the same sentance.
In any event, I remember the first time he was talking about not understanding the fuss in the US about marriage. And it turns out that, at least at the time, it's because he was clueless about how our system works here. Like, the fact that that word is used for the government thing and the religious thing. So at least on that front, he's more clueless than anything else. (As for how recently he agreed with Rush, and, for that matter, how long Rush has been espousing support for civil unions, I got nothing. I find it suspect that there are no direct quotes and that it's all filtered through Mr. L's perspective though).
As for playing a notorious homophobe's wedding: there's an argument to be made that he's reaching out, trying to build bridges blah blah. I don't buy it, I think he's in it for the money and I think that that's kind of his right. I don't necessarily agree with his choices or admire him as a person, but there it is.