So your stance is "it must be true, because it would be really stupid of them if it wasen't?"
I think its equally valid to say they are acting stupidly, and counting on dollars and cents to keep any trouble off their door.
The truth is, they have just claimed the above. They pressed no charges, and have provided no documentation to sustain it. Right now, they have no more proof then him, and have a strong reason (redeeming their reputation though mudslinging) to say that he was a bad man, so his opinion doesn't matter. Of course,as the NYT responds, they interviewed way more people than just the ones Amazon cherry picked to respond too, and those people all disagree with the new Amazon spin.