It was a simple point; none of them can claim to be ignorant of or broadsided by what just happened. But it isn't hard for someone with experience manipulating information for a living to spin a simple point into a 'grassy knoll' theory.
There isn't much need to ask why someone would do that. All you need to know is the logical outcome of the events under discussion and the position the spin protects.
Too make such a blanket statement is flat out wrong. Too claim ALL have been contacted, or that "none can claim ignorance" is misleading. Too you the Shiavo case appears to be one of the major issues of the last several years. Regardless of the media circus surrounding this event, there are many people, politicians included, who know or care little about Terry Shiavo. Good or bad, that's the way it is.