Hello, tyler26:
Regret You have not had lasting results through diet alone. The fasting certainly proves the food connection.
I like sulfasalazine, and when doing strict NSD it might work much faster than otherwise. The therapeutic dosage is >=3.5g and takes a couple of months to work up to but You may notice good changes on the maintenance dosage of ~2g/day. Make certain this drug is enteric-coated (Azulfidine-EN in USA and Salazopyrin-EC in UK I believe).
If butazoladin has worked for You in the past without stomach issues, I believe this would be the fastest relief for You, but it is a setback for gut-healing.
My preferred recommendation is to contact Road Back Foundation as I surely mentioned before but if antibiotics (other than the SSZ) are not a viable option I would suggest trying the SSZ first.
Yes, steroids work very fast but the long-term negative effects are just not worth the temporary relief. They are as gut-safe as the SSZ but I just cannot recommend their employment unless very special circumstances (vacation with Swedish models or the like).
HEALTH,
John