system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars ROTJ] Why did taking out the super star destroyer's bridge cause it to go careening down into the death star?

Surely the crew should be able to stabilize the attitude, take evasive action or simply bug out from some other part of the ship.
gpt
The Executor was in the process of a maneuver to better accommodate the approach of Rae Sloane's star destroyer, the Vigilance, so it could have a covered flank, the other flank protected by its extremely close proximity to the battle station itself. While its engines were firing (hence the order to intensify firepower rather than move the vessel. Remember the Executor's shields were down after sustained Rebel bombing), the primary bridge was destroyed and command couldn't be evacuated in time. Nor could backup command be restored before the maneuver continued to push it directly into the Death Star. 

Alternatively, the engines pushed it into the Death Star's gravity well. And since the ship was in a state of total chaos at the time, no one had the authority or foresight to save the ship before it crashed.