First of all, he has no standing. Being a fan is not nearly enough of an interest to get a lawsuit. Such a suit would have to come from the Steelers organization, not some prisoner. There might be a few very limited cases, such as buying playoff tickets in advance, but as a prisoner I am certain this is not the case. Second, he is filing in the wrong district court; next week's game is in Colorado, and that's where the injunction would have to be filed. Or perhaps the Southern District of New York if the whole league is involved, since the league offices are there.
However, the would-be plaintiff has a point. The NFL has never overturned the result of a game in its history, including grievous officiating errors or outright malfeasance (contrast with the NCAA, where such forfeitures are almost routine). There is no evidence the league even has considered the idea, leaving the internal appeals process useless. Formal apologies are the best the league has to offer, and they obviously do nothing to fix the problem. There is a law on the books prohibiting the television broadcast of rigged contests. Perhaps outside legal action may be warranted in this case.
Nevertheless, this suit does not come close to meeting any serious threshold for success.