There were way too many incidents before this to simply blame it on the too many men game 7. Apparently, if you listen to Cherry’s story, it goes back to the Atlanta to Boston commercial flight incident. Sinden was settled to fire him when he could.
Supposedly, this was the final encounter:
Of course, May 10, 1979 was the famous "too many men" Game 7 against Montreal. As Cherry tells one story, Harry Sinden summoned him for the postseason meeting, which went as follows:
Sinden: "If not for you, we'd have won the Cup. Instead, you're too dumb to be able to count to six! I oughta punch you in the nose."
Cherry: "Harry, if you want to punch me in the nose you need a stepladder."
Sinden: "Get the hell out of here."