Not a big ESPN fan but this is a great write up on the Pirate & his hand in changing not just college but all of football.
https://www.espn.com/college-football/story/_/id/35245200/mike-leach-football-air-raid-revolution
Reading the msu boards, it sounds like a cardiac issue and possibly a prolonged lack of oxygen to the brain. Purely speculation but regardless prayers for the Pirate!