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Suzanne Rampton drew attention to this report:
http://my.webmd.com/content/Article/84/98081.htm
The article is slightly confusing in the way it is written and the fact that it comes, not from a medical journal, but from the website of a commercial organization, WebMD.  The postgraduate study was presented at the conference of the AAAA1(American Academy of Allergy, Asthma & Immunology, no doubt a useful organization for other allergies but with no obvious expertise in celiac disease or gluten intolerance (not  mentioned on their website).
The findings of Ms. Lardizabal are interesting and may well be valid but more information is needed, like how the testing was done.
A less confused account of the work is here:(from the website of The Institute of Food Technologists - scientific arm of the the food industry) 
http://ift.confex.com/ift/2002/techprogram/paper_14050.htm
The "conclusion" is of interest  to people concerned about spirits and vinegar:
"Based on the results of this study, distilled products such as vinegar, alcoholic beverages, and alcohol-based flavorings can likely be ingested by celiac people without problem. Caution must be taken when eating food products labeled "wheat-free" or "gluten free" as some can contain appreciable amounts of wheat." 
Charlotte Ward-Perkins
Oxford, UK

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