I agree with the assessment that you agree with. West obviously saw interference. I'm guessing that that is what caused him to make the immediate call. He certainly was in no position to definitively tell without replay that the fan broke the plane. In his best judgement, betts makes the play if no interference is called. On a play like that, is there anyone who is that good that they could tell precisely where the fan's arms were located. Like it or not, his job is to make a call not to wait a while and think about it. Mookie was not allowed to complete the play due to interference. It was the right call. It was the job of the replay to determine who was where when the play occurred. Kind of obvious that it was really too close to call on that one.