Intentionally throwing ball off face

[26 Year Gap]

One of the calls I regret not making several years ago was when a player leapt to 'save' a ball that was going OOB, and threw it off his opponent's face. The player making the save was in a position to see the whole court and easily could have saved it onto the court. It was a calculated throw in my estimation, and I should have rung him up.