Rule 21.d (part 2):
http://seanlahman.com/files/rose/rule21.html
"Any player, umpire, or club or league official or employee, who shall
bet any sum whatsoever upon any baseball game in connection with which
the bettor has a duty to perform shall be declared permanently ineligible."
That would include a player, coach, manager, etc.
Black and white to me. He bet. He got caught. Permanently ineligible.