This was in the news in late October, my apologies if it has already been posted and I missed it. I just found the letter myself now.
Here is the link to the letter from Dr. Zamboni:
Here is the article in the Montreal Gazette about the letter:
"Inventor of 'liberation' treatment for MS blasts skeptics in Alberta government
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Letter from Dr Zamboni to Alberta Health Services
Letter from Dr Zamboni to Alberta Health Services
DX 6-09 RRMS, now SPMS
Zamboni's letter
Thank you for posting it!
We discussed it but it's worth discussing again! 

Dr. Zamboni in his letter wrote: "It is simply naive not to think that CCSVI (the narrowing of veins) significantly affects MS and (to) discourage research in the field. Moreover, it is irresponsible to criticize the pilot study on the value of angioplasty, given the fact that the current standard of care for MS is incapable of preventing progression to disability."
Zamboni believes, hallelujah, but I dont.Dr. Zamboni in his letter wrote: In a 2008 study, Zamboni reported 90 per cent of MS patients had malformed or blocked veins in the neck that couldn't adequately drain blood from the brain. Zamboni believes a buildup of iron in the brain ensues from this blockage, causing vertigo, fatigue, vision problems and loss of sensation