I'm not here to defend him but I deal with those lists all the time in my business. I have had a number of discussions with detectives in different cities about the list when helping my clients. A couple of detectives said something like this, "Once you get on, there is no getting off. Your clients should be more worried about the guys that are not on those lists but are on other, non published lists like, Drug Dealers, Murderers, Gang Members, Thief's, Democrats, etc."
I worked with a guy that was a ASYO coach. His assistant was a great guy, so he said. He had a wife that just picked up and left him one day. ...and she left behind her two children too. No note. No phone call. No email. Nothing. He was, apparently doing a great job of raising the two kids. He was engaged with them in EVERYTHING!!! He was a great mom and dad.
Fast forward... Someone approached my friend and said, "I saw Joe on the Sex Offender list for doing something with under-aged kids."
My friend checked and sure enough. He went over his house to talk about it. Turns out when he was 18 he was in a band. This 16 year old chick wanted to bone all the guys in the band and they did. The dad found out - apparently the dad was a cop, and all of them were busted.
The rules here don't allow for anyone to be taken off the list.
You can also be caught boning your girlfriend in a field somewhere.
I am not saying the guy is an angle. I am just saying those lists are far from perfect. Just think if they had lists for some of the things we may have done that we were not proud of. Half of us would be unemployable.