Hi Jaz,
Glad you found Kickas and I hope you can take something away from here to help your husband in his battle with the monster!
I have been on the diet for over 6 yrs and seen many posters start diet... for some unfortunatetly it did not help. Some may have not been strict enough, some may not have AS and for some it merely may not work. When I started, I recall a fellow that started at the same time 6 years ago (Ken). We exchanged a lot of Personal Messages as to what we were doing and how we were feeling... supplements we would try and just plain motivation as well. The diet worked for me, it did not for Ken.
But you will never know if it works for your husband unless you give it a try. Talk with your doctor... I have talked with all of mine in the states regarding and none told me not to do the diet, but many said it had no support to its effectiveness. Well, I am living proof of its effectiveness.
Many ways to approach... if taking meds, I would not discontinue, but would compliment the two approaches (diet with meds). If husband feels better, slowly reduce meds after talking with doctor.
Some start full no starch (as I did), some slowly reduce starch. Pros and cons to each...
No Starch - see results faster but requires a lot of discipline
Low Starch - may take a long time to see results if ever but can keep some comfort foods around and level of discipline is not as precise
Hope this helps and you find answers,
Tim