I hadn't read anything about that, but I'm not doubting you. Can you point to something to that effect? I'd love to read it.
If you want a Google GMail account, FReepmail me.
I don't know about an apology, but when he began to see how it was hurting business, public relations, and was faced with a libel trial over some of his statements, he just dropped the whole thing. He'd been embarassed in court before, when he'd sued the Chicago Tribune for libel and his general ignorance about the world was exposed on the stand. That's where the famous/infamous "History is bunk" quote comes from. He did NOT want to be on a witness stand again.
There's one more story, from one source, that at the end of WW2, when the footage of the death camps reached America, Ford was shown some of them at the private screening room at the Rouge. He stumbled out of there wide-eyed and terrified. Was it guilt? Was it fear he'd be blamed? Did it even happen? Who knows, but it's an apt coda to the story.