Just thinking, if you took it off and carefully cut that fourth ear off matching the profile of the other two sides the piece would be symmetrical, and given that it's centered in the rotating mass and not very big in diameter it's not going to impart much force to the dampener but why take a chance? It's a cheap casting not designed to be operated at speed, and if it ever DID come apart Murphy says it would be at the worst possible time. I'd take it off.