Do you know that for certain?
What would be the cost in him saying "I oppose same-sex marriage," if he truly feels that way? It's how his district feels. He'd get some crap from gay activists, but I don't think they're big in Brainerd. I doubt he's reading this thread. Instead, he dodged the issue. I can sort of respect that, which is why I didn't call him a self-loathing hypocrite.
As people with experience of human interactions, we do have a sense of how people's brains work. There are some patterns of behavior that make sense, and some that do not. That's the basis of all we talk about here, if you think about it.
It is very, very hard to imagine an out gay man in politics opposing gay civil marriage on a personal level. The arguments against do resolve, in the end, to a decision that gays must have fewer rights and jump through hoops because of the importance of intangible tradition, and that our relationships will never be full ones. I suppose it's possible for someone to be gay, out, and oppose gay marriage, but it's like that legislator in Kansas who opposed women's suffrage even though she was in government; really extraordinary. It is possible for someone to oppose same-sex marriage on
tactical grounds, which is something different.
Or maybe he's single and bitter and thinks same-sex relationships are for other people, so he wouldn't mind screwing them over. I don't get that vibe from his statements, though.