Just saw that you where getting the rashes back after you where earing wheat again. I did end my ankylosing spondilities of ten year by eliminating all starch see the starch free diet by carol sinclair. i am also following an MT diet and are getting better and better but you really should try staing off starch too see if you are intolerant to it, lots of reumatoid people have stopped the illnes by it.
But the main thing for me was removing the cavitations, and root canals i had. Under one theet we find a cavitation big as my finger tip, and a cavitation are really a pocket of gangrene, and you dont have to convince peoplke that gangrene in the body are very toxix for the imune system, the blood take one minute too pass the cavitation to the foot, there you have your answer for systemic illnes, its a focal infection that can make any illnes dipends of what genetic type you are or witch organ that are weak. But it is important to use a good dentist using the cavitat machine soo your sure too find all pocket of cavitations see http://www.dentalhelp.org
Ps after removing the cavitations i really improved and now i can eat wathever i want without my AS getting back.. you can eat as much food or suplements you wont but it will not help if you have big pockets of gangrene like me, check it out