Folks who are raising the issue of inconsistency certainly appear to have a good case, and I'm not one to argue with it b/c I have no other evidence that contradicts it. But I would like to delve more into the previously suggested possibility of Goodell knowing more...
In any workplace, the people in an around it know more than folks on the outside, even the media. The NFL is probably the same, meaning Goodell likely has access to additional info/stories about players and their behavior. It's probably not the sort of thing that would make a court case fly, but like any employer, he has the right to use his discretion when it comes to hiring/firing/suspending employees. Meanwhile, it wouldn't surprise me at all if Goodell was using other means, like private investigators, to more closely follow players like Thurman to see if/how they've cleaned up their act. I'm not saying that's cool, and it kind of sets off my fascist alarm bells, but the league is in a PR crisis right now and I can see why Goodell would be willing to go to extra measure to genuinely clean up the league. If he reinstated a guy who then got into trouble again 6 months later, he'd take a hit, which is something I imagine he wants to avoid.
Why wouldn't Goodell make the addt'l info more public? For the same reason as above -- because he wants to avoid another black eye. He's not inclined to tell more stories of players screwing up when there are too many floating around as it is. But I would bet he would act on the info he had, even if he didn't/couldn't/won't share it.
So he sure looks inconsistent, and maybe there's no other info out there. But I kinda suspect there is, and that maybe he's simply refusing to let guys who could stain the image of the league back into the fold.
Except Porter for some reason.