The conclusion that I've come to is that if bitcoin was created by a government organization, it was done by a very small group of individuals working without the knowledge or permission of their superiors.
I've come to the same conclusion, and really if we're talking about a small group of individuals working sans permission from their superiors, it really doesn't matter whether they're with the government or not.
Satoshi, whether a group or individual, was incredibly clever for not coming forward publicly to claim Bitcoin. This focuses people's attention to the technology, not the man behind the technology. How many times have we seen the messenger denigrated as a way to distract from the message?