Falling Fire - The Cusp [1997 - Canada] sci fi

In 2051, Earth is completely depleted and exploring its resources in asteroids by ISA Corporation, while ecologists and Eco-terrorists commanded by Lopez are against the procedure. First officer Daryl Boden of a mining spaceship is divorcing his wife Marilyn Boden, who is a former agent. He is working for a long period steering the asteroid MT-27 through explosions into Earth orbit, with the support of Engineer Rene Lessard and the crew, for ISA. When Captain Jimmy Rice orders a risky maneuver to comply with their schedule, Boden has a friction with him. Soon the crew members die one by one in strange accidents, and Boden suspects that one of the survivors might be a terrorist. Meanwhile Marilyn is kidnapped by Lopez, who discloses that he has an infiltrated mole on board of the starship to steer MT-27 to crash on Earth and destroy mankind to cleanse the planet.