Oh jeez, Dave. That's awful. Similarly, I decided to look up an ex-boyfriend a few years ago, just out of weird curiosity. Found out that he had been arrested for sex assault on a minor. Also for violating his parole and the sex offender laws in my home state several times afterward. I felt like dousing myself in bleach and drinking some to be sure I was clean.
Time to scrub everything Rog from my life. He's not guilty by law yet, but it's looking more & more like it's him and not one of the tenuous straws I was grasping for. He's now barred from being around ANY kids - including his own.