The source of the documents was not the DNC. The source of the documents was the Travis County Texas (Austin) Democrat Party. Thanks for that.
Still, to casual observers, the handlers of the documents also suffer some taint. From the County level, to the national level, then and also to the Kerry campaign. Shopped to the media, and taken up by CBS. All of them have a part in the effort.
Well now, how did these pseudo-files get into the hands of someone in Travis County, Texas, thence on to CBS?? The DNC or another of its many fellow-travelling ghouls (Terry Lenzner comes to mind ...) might well be the prime movers here.