Ninja, do you have any info about that diet, such as references, scientific literature and so on?
The reason I ask is that I battled with breast thrush for a long time (I had to wait a long time before my GP would give in and prescribe me fluconazole) and tbh never found anything in my reading to back up some of the most extreme diets like that one - although there does seem to be possibly more justification for cutting down on sugar and high-glycaemic-index foods in general. I've never quite understood the logic behind giving up things like yeast products, or found anything online so far to justify it, outside of 'anti-candida' type websites. I'm not sure why eating one kind of yeast (e.g. cooked in bread) would make a different kind of fungal organism (i.e. the thrush one) thrive, particularly. As thrush thrives on sugar, I can understand a bit more why avoiding huge peaks of sugar in one's system might help though (although to a certain extent unless someone's diabetic you'd think their blood sugar should stay reasonably in control even then?).
I'm interested in this partly because as a teen I made the mistake of picking up a book about candida in a health food shop and ended up really distressed and worried (I'm talking about for a long time - a year or more) that I had some kind of problem (easy to do when the sorts of symptoms the book listed are so vague and general!) and going on all sorts of diets, worrying myself sick, trying to get hold of special food supplements and so on. There's some dubious (non)science in that area that makes me very angry, because there wasn't a d--- thing wrong with me!
This site has some info on candida 'problems' and their proponents, including the bloke who wrote the book I unluckily picked up all those years ago (Crook):
www.quackwatch.org/01QuackeryRelatedTopics/candida.html
What's hard is trying to work out where the line is between good advice supported by some kind of evidence, and the slightly more loopy anti-candida stuff (I'm not using that word against you Ninja but rather some of the websites, books etc.). I suspect going for a low-glycaemic index diet could be very worthwhile, but I'd be quite wary of some of the more extreme advice.