I’ve never heard of the author of this piece. I think it’s far-fetched.
If you haven't heard of Gertz, then you haven't been paying attention. He's been writing on the right since the Clinton days. http://en.wikipedia.org/wiki/Bill_Gertz
You need to read more and stretch your imagination. And remember that Goebbels taught that the big lie works better than the small, and followed that with the idea that the bigger and more outrageous the crime, the less likely anyone will believe it happened, much less that you are guilty. The Alinsky left depends on this bit of psychology.
If you want far-fetched, try a story about how the FBI and CIA counter-intelligence groups were pwned by the Russians for 22 and 9 years respectively. Yet Aldrich Ames and Robert Hanssen did just that.
I think in this case 'far-fetched' just means that you don't want to believe it, not that it is that much different than things that have been documented to have happened.