it looks real to me, unless at 13:00 seconds where the disc disappears they have fiddled with it. Who knows. Not like it'd be impossible though, granted I've never gotten that lucky! :0
If you grab the slider and pull it so it shows the frame at 12 then 13 then 14. You see the angle the disc is moving which looks like it will land 5 feet or so to the left of the basket then at 14 the angle of the disc changes to flatten out and go for the basket.
Does not matter if it is fake, it looks like a very cool hole.
Through extensive analysis of the film my team has determined that the disc should have bounced off the basket back and to the left. back and to the left.