I'm not so worried about Dr. Fry being a quack - he's not selling me anything or costing me any time or money, so I'm willing to read about his ideas. As well, in this interview his suggestions about diet modification ring true (low fat, low sugar, etc), and he never says you have to buy his proprietary supplements or food to "cure" your MS.
The website you posted leaves a bit of a bad taste in my mouth, however. Not because it attempts to expose an alleged quack, but because the author refers to a poster as a "Lyme nut."
Either way, there is interesting work about MS and bugs that IS being published, such as: "Is multiple sclerosis caused by a silent infection with malarial parasites?" - http://www.ncbi.nlm.nih.gov/pubmed/11516219
I'm willing to learn about everything, since none of the drugs I've been prescribed are doing a damn thing to make me feel less sick or walk better.