In the span of about two seconds, LeBron James displayed the quickness and speed that makes him one of the world’s most gifted athletes. But the burst came during a timeout. And the reason for James’ explosion of athleticism had nothing to do with Friday night’s game against the Detroit Pistons. At midcourt, a sweepstakes winner named Michael Drysch of McHenry, Ill., had just swished a half-court shot for $75,000. A 50-year-old computer technician, Drysch shot the ball awkwardly with his right hand — a half-armed hook shot— the way you would expect your company’s IT guy to shoot it.