Well I would bet my left nut that there are two sides to this story and much more information possibly that has not been presented.
It would appear that Marks condition is not considered permanent by the MBF board, yet the Cardiologist is not recommending surgery, so is there a cure to this condition ?, ( recommended in his case or otherwise ), is it the only medical condition he is suffering from that would prohibit him returning to his previous level of pay within the industry ?.
Not intending on casting any doubts on Marks character, but not all members would be 100% honest, some would see the opportunity for a pay out and grab it, I am certain the MBF has dealt with that scenario before and have protocols in place to protect the organisation and genuine claimants.