I agree with the comments about his memory and "so called objective facts".
I can't decide if its an indication of how far from reality he is, or whether it's quite clever. If there were to be fall out further down the line from anything he did or said, he can say "but my memory is terrible, I said that right at the start. I just misremembered, no harm meant".
Either way, it does call into question everything he goes on to say.