Hi Utahmomma,
I'm a momma, too, not a doc, so let the docs call it-- you definitely need to see a good endocrinologist. That said, I have a type-1 daughter and a type-2 husband, and type-2 is rampant in his family, so I'm pretty familiar with both.
You're right that it makes no sense for him to have Type 2. I have heard of a couple of non-overweight people getting type 2 when there's a strong genetic history, but they don't usually get it until well into middle age.