based on even just his last few blog posts i can see "blowhard" or "shill" but intelligence asset? what's your reason for saying this?

At the bottom at this page is part of the evidence http://cryptome.org/2014/06/wl-harrison-hoax.htm . Every single time a anti-NSA story comes out he is first to try to defend the actions of the NSA. He is a provocateur and clearly biased.

Someone consistently disagreeing with you is NOT evidence they are acting maliciously or are part of a conspiracy against your viewpoint.