When they lost power they lost rudder control? I don’t know.
I’m not even sure that there are rudders on the vessel. These must be diesel driven electric drive power units.
I doubt they have mechanical rudders. This is a huge ship.
And they did deploy at least one anchor, but there again, did it require power to operate?
The reality will eventually be identified.
I see no reason to suspect an intentional act. The harbor master was overseeing the vessel.