The mine's computers, circuitry, ect are infected with the virus. Wipe out the virus by blowing up the mine. Plus the reactor shoots at you. If it tries to kill you, you kill it right back.
He needed the MD to go out to distant systems to flush out the robots, so he gave him the warp core. To save money, instead of paying the MD when he got back, he sabotaged the warp core. The MD could have spread the word that the virus was of ALIEN ORIGIN and might have gotten the CED involved.
Dravis is the overlord of Shiva station. If they weren't indoctrinated and convinced by the allure of galactic conquest and profit, then they could have been like mindless idiots and been like "HEY! The robots are shooting at the CED...LET'S HELP OUT OUR BOTS! MAN THE GUNZ!"
The first batch of infected robots (D1 and D2) could have interrogated the hostages for the locations of other holdings (OBJECTION! 'They could have downloaded the data from the mine's computers!'-- Mine personnel could have sabotaged the data before being captured), military information, bait for traps, better understanding the enemy, and according to the novels, downloading their brains into the robots themselves to give them personalities to better understand the enemy (that backfires though...sometimes).
...and according to the novels, downloading their brains into the robots themselves to give them personalities to better understand the enemy (that backfires though...sometimes).