While I agree that everyone involved has to go, they need to go in time. JoePa was first, cut the head off...
If they terminated everyone, right now, PSU would have to forfeit the remaining 3 games, pay tons in fines due to it and in turn it punishes the current players that have nothing to do with this scandal. While life is definitely bigger than football, all these coaches will be gone (IMO). Whatever new coach they bring in will bring his own staff in, and I would bet he wouldn't even think about retaining any of the current staff that could be possibly tied to this situation.
So, let them play out their three games and then they'll all be without a job anyway (well, possible bowl game).