You must also take into account that (a guess) well over 50% of MLB Players cant bunt to save there life.....let alone decide what side of the field to direct it too. Just getting one down in play is a feat for most hitters.
Also, a player may want to chose the side of the field to bunt the ball, but a decent pitcher will throw the ball where he has a limit to his options of placing the bunt.
An unsuspecting bunt, the pitcher should throw high and tight, limiting the chances of a bunt being placed anywhere. As for an expected bunt, location of the pitch will help dictate where the batter can actually get the ball into play at.
Tamers Take