That makes sense if the rudder were moved hydraulically, (almost a certainty) and if the hydraulic pressure source were electric. Also highly likely that the rudder control is an electro-hydraulic servo system.
'Swelp me, I'd never want to be on a ship that had no redundancy of hydraulic pump or generator, but who knows?
From my machine tool days in the '70s I know that hydraulic servos have nasty ways of going haywire, so I'd want a manually operable backup rudder valve.
I've read that WW2 destroyers used chain falls for emergency rudder control, but it would take one helluva chain fall and a team of ten or twenty men to do it for a container ship that size.
All modern Navy ships have remote manual backup control of the rudder. I imagine this class of ships does too. The problem is that manual control is a very slow and tedious process. Can you imagine trying to move that size of a rudder with a little hand crank? I’ve tried it...it ain’t fun.
Anyway, it was about four minutes from the initial loss of power to the collision with the bridge. And the collision only happened at about 1.5 knots.