There are a myriad of ways fans have tried distracting free throw shooters.
The coordinated shifting of hands from left to right. The stupid noise sticks. Jumping up and down. Personal favorite - the well timed unleashing of a bikini clad poster.
Suffice it to say, this is the first time I've ever seen The Charleston dance used. And as you might have guessed, it wasn't very effective. Manu wasn't fazed.