AP=Alcohol-Prone
If you listen to the audio, no honest person could mistake the soft murmur of the crowd (the "oohs") with a chorus of "boos." And even if you gave him the benefit of the doubt on that, how come the initial story didn't mention the loud cheers and appaluse in response to Bush wishing him a speedy recovery? The comment "Bush did nothing to stop it" was a cheap jab that showed the true intent of the story was to smear Bush, not report news.
When I first read the initial wire story (on Drudge), I was surprised and irritated that Republicans would be so vulgar. It didn't sound like my party at all, but rather the kind of thing you'd expect to see happen at a Democratic rally. When I saw the retraction come across, I was happy to see my gut reaction was well-founded.