Along the lines of a Snowden conspiracy theory, Dave Emory has done a fair amount of research and constructs quite a complex theory (see the "For a The Record" series on spitfirelist). He presents some interesting arguments that serve as counter point to the pervasive (libertarian) rhetoric that hails Snowden as a champion of freedom.
Stepping through the dreck of Emory's arguments[1], the only substance I can find is claim that all these folks are libertarians or right-ward sympathizes (It's not true that everyone defending Snowden is Libertarian but that's only one problem with Emory's off-kilter claims and argument-style).
I'd view myself as left-to-far-left with zero sympathies to libertarian politics as such. But any claim that all the libertarians are working together seems preposterous. Libertarianism appeals to geeks, constitutionalists and other sectors of the American population who tend to take it's positions seriously.