BJ got annihilated in his last couple of fights.  His only hope of winning again is to fight another over the hill fighter like Siver.  He really has no possibility of regaining his former stature, and thus his future is limited.  At what point will he realize his health is more valuable than the money he will earn and focus his energies elsewhere while he can?  He won't be any good to his family once the effects of getting his head pummeled become evident.