One of the lead ups to the recent outdoor games involving the Sabres, they did the four show behind the scene lead up to the game. Remember Okposo being shown in his home at the time with his wife and two kids along with I believe some other family members. Think back on that and with what he's now dealing with as far as concussions and there has to come a time when the game is no longer worth it. There's other ways of putting food on the table. Family and your time with them should always take precedent. Hope he gets healthy.
Side note, I think he had just recently come back from a previous concussion when he engaged in that fight (though it appeared reluctantly). Can't remember who the player was that wanted to fight him, but really you know the guy has dealt with concussion issues, what's the purpose.