It's sad to think about, but if this shit-storm that was the Sadunsky scandal broke a year later, that's to say after Joe Pa died, Paterno's legacy would have gone untarnished. I don't think they would have drug him into it postmortem, or been able to prove anything if they tried.
I hate to say it, but Robb is right I think. He will be remembered for the ONE time he should have acted, and in fact he did, but he didn't do enough.
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It's not fair, but the court of public opinion has crucified him already I fear.