If the video and audio are in sync:
There's a whistle well before the L raises his arm or moves his body. I think it's from the new C.
Given that two officials had a whistle, I'm going with a CC given the FIBA training videos that I've seen.
Was the white player in danger of not obtaining the defensive rebound? No, I do not believe he was. However, FIBA doesn't like the type of silliness which the foul was. It's not surprising to me that it was called.