Tom,

Dude. This is a guy who protests at soldiers' funerals, claiming that they died in Iraq because the US is somehow "tolerant" of homosexuality. Yes, he calls himself a christian, but anyone can call themselves anything--it's actions that count. Do you want to be associated with this man as a "fellow christian"? Even the hardcore fundies here in the US decline to be associated with him. I submit that you're taking the principle of "brotherhood" too far.