The BLDGBLOG post is here
http://bldgblog.blogspot.com/2009/01/stonehenge-beneath-waters-of-lake.html
Unfortunately the PDF paper they link to hase been deleted.
Dr Mark Holley is the author of Inner Hebrides Crannogs on the Web http://www.crannogs.com and knows what he's talking about, I wouldn't rule this out as one of those cranky stories we get.
Something is not right. This message is just to keep things from messing up down the road