The way you've worded that sounds more like "court of public opinion", which is different, but relevant.
The NFL fired him from his job, and it was way too soon after the alleged event for them to claim to be reacting to lower ratings or something like that. I can see Irvin suing for wrongful termination.
Thing is: if the NFL had any stones on the core of this matter, they would have hired observers to tail Irvin, and I'm pretty confident they would have found all the evidence they needed to legitimately fire him a long time ago.