This is a lot bigger story than has been reported. As articulated by former NCIS Special Agent of the Year John Snedden, it is a case of political corruption at the highest levels of the Pennsylvania state government. Former Governor Tom Corbett was exacting revenge from former PSU President Graham Spanier for his criticism of Corbett's draconian cuts to public education funding and for his perceived support of Corbett's political rival.
Regarding you 2 points:
1. Yes, Curley and Schultz plead guilty to a single misdemeanor count in exchange for the State dropping the felony counts. They did this because the OAG had been very successful in selling their false narratives and poisoning the jury pool. I believe that Curley and Schultz believed they would get away with just probation but the hanging judge (Bochebella) thought otherwise. Also, I believe with the misdemeanor conviction that their pension benefits will remain intact. Word has it that Gary Schultz has given an interview where he will explain why he knows Sandusky is innocent and the interview will air when his probation is finished in July.
2. Yes, Sandusky was investigated in 1998 for the v6 shower incident. It was investigated by CYS, State College Police, Penn State Police, the Centre County DAs office with no criminal charges filed and CYS not indicating Sandusky for child abuse. At the conclusion of the investigation Detective Ronald Schreffler apparently advised Sandusky not to shower with kids again; however Sandusky has stated that he understood Schreffler to mean to never shower with v6 again (and he never did shower with v6 again in their subsequent 13 year friendship). Most people will agree that Sandusky exercised bad judgment in showering again with kids and that it is inappropriate in this era to shower with a minor who is not your child, but in both the 1998 and the 2000/2001 incident the known facts indicate that it wasn't sexual.