Fatfish
One engine was stuck at sub-idle power from TOD and the other was stuck at 70% power. What would be the point of shutting any engine down? You shut the one down at 70% and you are ditching. You shut the other down and you are depriving yourself of a source of bleed, hydraulic and electrical power. You are only complicating things when you eliminate a source of these services. Think spoilers, flap speed, gear speed etc.