Show me where common sense and logic dictate that this man must be a racist and I'll happily eat my words.
Must be a racist? No (he'd have to be pretty deluded in his thinking to believe advocating segregation isn't directly related to racism though). Most likely a racist? Yes. Good enough for me as a poster on TrekBBS with no influence over this guy's life to make a judgment call on him being a racist? Absolutely.
I already laid out the common sense and logical arguments in my previous post, but here they are again:
1) If he is doing it to protect the couple's potential children from adversity, why does he not have other restrictions on marriage, such as criminal records, frequent unemployment, inheritable medical conditions, economic status, uncommon religious beliefs, alcoholism and drug use, domestic violence, or any number of other things kids could possibly be troubled by? Why is interracial marriage exclusively a dealbreaker?
2) If he genuinely believes it represents an extremely difficult issue for children to overcome, why does he offer assistance to the couples in finding another Justice of the Peace who will perform the ceremony? That points to not actually being concerned about the kids, and instead having a personal aversion to interracial marriage and not wanting to perform the ceremony himself, much like a minister saying "I won't perform your gay marriage, but here are some directions to the Unitarian Church down the street." If you truly believe it's damaging, then shouldn't you be against it completely, and not just against performing it yourself? That just means you personally find it icky.
3) Why does he assume that all marriages are going to result in children? Shouldn't a "Do you plan on / are you capable of having biological children or are you planning on adopting a child of a different race?" query be part of his opening questionnaire to the couple before deciding on performing the ceremony? Why does he still oppose interracial marriage when children aren't an issue?
The Magic 8-Ball says "Signs point to yes" when you ask if he's a racist.