I haven't heard one good argument for why the NCAA should get involved, beyond variations of: "Well there just has to be something".
If the NCAA isn't going to investigate an athletic program with 5 people sent off to Federal Prision because of their actions while working for a particular NCAA school's athletic program and specifically with that particular programs most valuable asset involving transactions that go into the 7 figures in total.
They aren't going to investigate this situation, despite how horrible it is . . . it is a criminal/civil case, not an NCAA case, unless someone can start pointing out SPECIFIC NCAA violations, and NO . . . pointing out that Penn State may have broken the Spirit of the NCAA mission statement, ain't an NCAA violation.