Join Date: Sep 2010
Location: In the shadows ...
An interesting concept. Though the question in my opinion is not: Can the Emperor take control of or destroy the Hive Mind. The real question is: Can he destroy or control part of it?
The Tyranids work like, well, a hive and they have basic troops commanded by intermediate troops, commanded by advanced ones, so forth and so forth. The Emperor may not be able to snuff out the Hive Mind, or break its link to a Hive Fleet. But I imagine it'd be a much easier task to turn part of the Hive Fleet against itself.
If he could snuff out part of the Hive Mind by breaking the synapse link he could make portions of the Hive Fleet turns feral.
Also, while we have no displays from the Emperor on his power (except his galaxy-wide torch), I have to believe that with a thousand psykers being sacrificed a day for him, his presence in the warp must be much larger now than before. So, in my opinion, if anything the Emperor is stronger than he was against Horus.
The chaos gods abandoned Horus most likely because they saw the can of whoop ass coming their way and wanted out of the way so as not to get fucked up!