Play curry tough, but straight up, no doubles. Let him score 80. Just stay home on everybody else all game long. The human brain will not let someone shoot 20 times in a row. He'll eventually start forcing passes to other teammates to try to get them involved which will be playing into your hands if you stay home. Plus, letting him shoot everytime is a win psychologically for your D because he's doing exactly what you want him to do, even if he scores, so it's not demoralizing like it is if you scramble scramble scramble and get beat.
Plus, even if he scores 80, he'll get tired carrying that kinda load for 6-7 games.