At least you admit you are "presuming". This guy is a shit-magnet. Staying invisible cannot really be done in this type of thing, sooner or later someone somewhere will want 15 minutes of fame and call the police/media/friends/etc and next thing you know it's a news story because it involves someone like George Zimmerman.
And stop what, exactly, existing and being a target for opportunists?
Giving interview, trying to sign up for celebrity boxing. If one wants to lead a quiet normal life step one is to be quiet. Lots of people have been involved in high profile stuff over the years and then managed to move on.