I have watched this about 4 times now and paused it in spots soon the ball hits......so this is what it looks like to me.
I thought it might have hit the stick on the bounce and came back but it didn't.
It looks to me once the ball hit the green......bounced up.....just missed the stick....came down on the edge of the cup .....but because of the backspin on the ball......soon it hit the edge of the cup it had just enough back spin on it to pull it back from the ball going into the hole.
Great shot but that little bit of backspin on that ball stopped it from going in.