Best of luck to him in accomplishing what he desires, it will however, be a long and painful road to get back there.
I'd wonder (for myself) if i'd have the same desire. To fly again, yes, i could understand that, but to know what my last flight was like in an airliner, and to think of strapping in again, to do the same "routine" thing over and over again, would definitely be a headjob.
Personally i know it could have been any one of us who could have made the same blanketed mistake, any one of us could be ostracized for violating sterile cockpit, sometimes with talk that you might consider "necessary" however, the Feds may not have, i dunno.
Fly safe.