I looked at it again.
The ref under the goal had the best view of anyone. I paused it at 1:46:21. Crocker has ripped at the ball, and it is now loose under the goal.
The ref under the goal saw the play and is staring hard into the mob of players. The ref at the top of the screen would be blocked by Crocker and would have no chance at seeing the foul. The ref that did call it is still walking casually not looking like he has any intent on calling a foul. His angle is the second best on the court, but he is near half court when Crocker goes for the ball.
I don't doubt there was a foul. I wish the guy under the goal with the best view of anyone would have called it. Instead, the guy who T'd up Capel is the one who catches the foul. If two guys see it, it's not a big deal. But the one guy who appeared to have a chip on his shoulder is the only one who called it. It makes what was likely the right call, look bad.
Edit: I do think he was calling Willie for a foul. He only blew the whistle when he saw Willie come flying out of the mob of players with the ball. When Crocker went for the strip, he didn't stop. He didn't make any intent on making a call until Willie came out with the ball. I don't think he saw Crocker's strip well enough to call a foul. Either way, Crocker fouled and should have gotten called for a foul, so whatever.