By Stephen M. Silverman
November 28, 1997 12:00 AM

The driver of the car in which Pierce Brosnan’s 16-year-old son Sean was injured pleaded innocent in a Malibu court on Tuesday to charges of drunken driving. James P. Hall, 19, was at the wheel of a sport utility vehicle when it plunged down a cliff off a Malibu road on April 22. Sean Brosnan’s bladder was ruptured and his pelvis broken in the mishap. Pierce Brosnan has postponed his wedding to Keely Shaye-Smith until Sean recovers.