In an attempt to go home so that he could see his pregnant wife, Bruce pulled a fire alarm that sent the hotel guests into a panic. This threatened to cause a disaster since many of the guests had become infected with weaponized Cordilla virus. Michelle Dessler prevented his escape to protect those outside the hotel in case Margolis was infected.
Background information and notes
His fate is not seen on screen, but there was a small chance that he was one of those few who was naturally immune to the virus.