I remember this story - at least one of the boys was a bat boy for the team IIRC.

Ok...looked around the internet. He was married when he got to UF. Has two kids. Got divorced in 2017.
His family was friends with the family of the two boys that were killed.
That family had a medical device company, pretty lucrative. Father was president and wife listed as VP.
Marriage issues, I guess an affair may have been taking place.
Somehow the husband was fired from his role as president of the company (that was named after him), and he was posting wedding photos and such to Facebook, kind of strange. A couple days later he killed his boys, set fire to a vacation home, then killed himself.

The woman and O'Sullivan are now married.

I can only guess that the wife was having an affair with O'Sullivan, while her boys were around the UF baseball program all the time, and the husband probably felt like everything was destroyed, work performance probably went haywire, got fired, and that was the end of it. Probably felt like he lost his boys, his wife, and his company. That's his entire life and everything he lived for, most likely.

I could not care any less about the CWS now. Not sure of O'Sullivan's role in all of this, but it doesn't look all that great.