Not necessarily. I'm not certain they'd have released anything about his death had it not come to light via the media. In fact, to this point, it still is uncertain that it in fact was a friendly fire incident. From all the news sources I have read on this, that is still in contention, although you wouldn't know it from everyone's reaction.
As for anyone making political hay out of his death, how does that benefit the Bush administration? Perhaps the Pentagon might for recruitment purposes, but even they'd have been far better off if he'd returned home alive. It seems to me that if anything Tillman was glorified for what he represented, the patriotic American ideal, not for any partisan political mileage anybody could have gotten out of him.
To assume that anyone is using his death for their own gain is... well, more ghoulishly cynical than I or any Neocon was supposedly guilty of with any of even the worst of the crimes Clinton had been accused of during his tenure (like Vince Foster, FBIgate, Travelgate, Whitewater, etc, etc, ad nausem). And, I might add, with as much evidence backing these accusations.
Totem