Hi Laura.
I am sorry to hear about your situation. In my opinion a good GI should either take an interest in the latest research and read up on it, or write a referral to another GI who is more knowledgeable in the field.
If I were you, I would schedule a meeting with my GI and push for a referral. I actually got one from my GI a while back, but I have not used it.
The referral is actually pretty straightforward, you can fill out most yourselves, but your GI does need to fill in a few fields and sign.
Maybe an idea could be to print and give your GI the consensus document from the latest MAP conference, as well as (some of) the information on the humanpara.org page regarding til AMAT protocol.
I hope your husband will get better soon!