Yes, plausable deniability. "Oh it's the machines fault....calibration issues....screen was still wet....etc." Otherwise, it's straight tampering and there's no explanation or plausable deniability.
Bottom line is this, was the vote rigged? Yeah, I believe so. Can/will anything be done about it now? No. That part is irrelevant, what matters is doing whatever possible to get the man into office, then play disaster cleanup (ex. his birth certificate). This country is not about the welfare or best interests of the American people, it's about a politician furthering his own damn agenda.