He was clearly trying to draw a foul here, and although he may have actually succeeded—Gary Neal's hands were right on Westbrook's chest when the shot went up—this shot was ill-advised. You can't really expect the referee to be ready to call a foul on a half-court shot with 18 seconds left on the shot clock, because that's a shot that nobody else is crazy enough to take. Well, except for J.R. Smith.