What? He drank enough to pass out - sobered up and went about his business. He would have been given the all clear by the doctors both at the club and at the hospital.If he does have an on going health issue as you claim and your club cleared him to play after such a severe attack then your scats could up for a large fine or charges for neglecting your care of duty.
People with alcohol issues have the same issues others with substance issues have. They lay off for a long while then when they get back to it they underestimate how much they can handle.