Kerry conceded because he couldn't afford a great deal of scrutiny of the count in some of the neighboring states.
This guy is simply a publicity-hound seeking to support his web-site. His hypothesis is contrived and ludicrous. On election-day, I served as a Republican challenger in a heavily black inner-city precinct in a northeastern city. We had no provisionals and every voter having registration problems got assistance and eventually got to vote. The precinct was run by black Democrats. I guess my Republican caucasion appearance wasn't able to influence the election officials there as challengers in Ohio black precincts apparently did.