Back in the day, the analysts talked about how it was common practice to play with illegal sticks until late in the game. At that point the players would switch to the legal ones to avoid penalties. Demers was well aware of this and took advantage of it when he saw McSorely hadn't switched.
Was this true? No idea, but that was the story back then with all the talking heads. Never heard the story about Carbo before...
I remember the this too.