As I understand it, the NFL sent an investigator (a female investigator) to interview the complainant in this case. The NFL's female investigator stated that the woman filing the complaint was not credible, basically the investigator didn't believe her. The police also had an issue with her credibility and declined to file charges.
So there is no evidence that what this woman said occurred actually occurred. No one who has spoken to this woman believes her story, and Elliot denied it from the beginning. So with all that lack of evidence, and the NFL's own investigator reporting that she didn't believe it happened, Rog goes ahead and imposes a 6-game suspension.
Given all that, what exactly is Elliot supposed to accept responsibility for?