The thing is: By the time the car has traction again it might have rotated around the up-axis. Getting back from that configuration do a less unstable configura

The thing is: By the time the car has traction again it might have rotated around the up-axis. Getting back from that configuration do a less unstable configuration can very well improve if the car knows how to drift, especially how to go into the desired direction even before the drift has ended. Doing so would make the (result from the) initial lose of control on the black ice more limited and more controlled, hence less risky. tl;dr. nothing you can do on the black ice. but if you have tracking again there might be faster and saver ways then "first stop drifting, second start driving in the correct direction".