I do not support pro/college (SSDD) sports to any extent. A silly waste of time and fiscally irresponsible on the part of those who go to games, etc. Ray Rice is at best a filthy pile of excrement. An attack like that would easily qualify as a felony here, and in fact would be a strike (as in "3 strikes case"). I'd have to double check the case law on causing unconsciousness as great bodily harm, but I suspect it would an assault 1, which has a pretty stout sentencing range, for good reasons. The conduct of the prosecutors in NJ is shameful.
That said: it's his job. He is not a role model, or anything else of that nature, no matter what the league and its lackwit fans and "leaders" say. I do not think any real connection can or should be drawn between that behavior and his ability to play, at least not until he is sentenced to prison where he belongs. As much as I have no respect for the NFL, this is a non-issue.