Do the math, i.e. the now-resigned General Stanley McChrystal: No four-star U.S. Army General is going to give the kind of interview he did to Rolling freakin' Stone and NOT expect to get shitcanned for it. If you're TRYING to lose your job in spectacular fashion, openly mocking your boss is a good way to do it.
So, then: Within the next few months (after "staying out of the spotlight) for a bit, General McChrystal will be on the Teabagger circuit as a "martyr" to Obama's "disregard for the military" or whatnot, and he'll probably be a Senatorial (Presidential?) candidate not long after that. Just you watch.