I vote "none of the above." I have a different perspective on this whole shebang.
I believe, if PSU's options amounted to "just another successful but non-descript coach," there wouldn't be a program. To me, it was Glanville or nothing.
I recall some of the Glanville defenses putting emphasis on show more than efficiency. That's the past, so I'm hoping that his mindset has improved on this... and, really, I can't blame the defense for Saturday's mishaps.
For that matter, when Mouse was first coach here, how many times did PSU go to the playoffs? How many times did PSU get thrashed by Idaho? Mind you, the Mouse offense HAS adjusted to reality since then IMO; I know Mouse can adjust. Saturday was two fumbles returned for touchdowns that obviously demoralized PSU. (Background: I saw last year in Pullman, in the space of 15 game time minutes, the Oregon offense dissolve from potential national power to dog meat because Jonathan Stewart had three fumbles.)
I think PSU had no choice. If the program has to perennially make the playoffs to sell tickets (and I believe the NCAA gets a cut of playoff tickets), then PSU football never improves from circling around the drain while the faucet is running. Selling tickets is the first job in Portland. PSU isn't averaging 10K, but what they're drawing is still a dramatic improvement over recent history. If things improve on the field, there's a larger base from which to expand upon. If things fall apart, then those things were going where they appeared to be headed anyway. I suspect, whatever happens, this was a risk worth taking.