For real, he is among the most entertaining, knowledgeable, and passionate members on this forum. I read the site long before I got the bright idea to join, and his posts always kept things interesting.
Now, whether you unban the actual BW username, or instead the JM username, associated with his Facebook account, that is up to you. So what if he started a thread about a SKI magazine instructor and his 2-minute glade-skiing tutorial? That is hardly the worst stuff that goes on here unmoderated.
I would say that if you don't unban him, it proves that this site is hellaciously age-discriminating. While this has become a refuge for 50+ers, the membership needs a rejuvenation with younger folks.
That is all.
(Before a meathead accuses me of being BW, consider that the sentence structure and vocabulary used above are not characteristic of the poster in question)