[nohuck13]

Section I-Player The player is out-of-bounds when he touches the floor or any object on or outside a boundary. For location of a player in the air, his position is that from which he last touched the floor. [0]

[0] http://www.nba.com/analysis/rules_8.html?nav=ArticleList

Kobe Bryant shooting from behind the backboard in 2009: https://www.youtube.com/watch?v=KnARpfzVIis