A ship in active mutiny can't attempt to prepare to repel boarders, and generally has extremely low morale, which makes it easy to take the ship.<br/><br/>The main difficulty in taking the Raider is going to be the fact that it's flying through a protoplanet right now, without any way to correct its course, which will likely result in the total loss of the ship within an hour.  Effectively, the thing is sinking, any anybody who can get to the lifeboats is running, while the rest of the crew runs into the emergency shelters and prays.  The bridge fighting is completely pointless, but the mutineers don't actually know that.