...the part that article didn't mention is the 22-0 baseball loss was because Cumberland had decided to give up sports, but this one student manager (the one mentioned in the article) thought if they beat Georgia Tech in baseball, they might reconsider. So the student manager went and got a team full of semi-pro and minor league ringers, who beat the snot out of Heisman's Tech squad.
Somehow, word got back to Heisman of what had happened, and that's why he forced them to play football and why he put the screws on them throughout the whole game.
There was a whole long article about it in the MSU/GT game program. I had plenty of spare time in the first half to read about it.