They said the rotation of the core came to a stop more recently. Sounds like recent measurements indicate a counter rotation now.
1 - No mass changes direction without influence of an outside force.
2 - Iron loses its magnetism when melted.
3 - There is friction between the movement of the core and the solid outside shell.
One feels compelled to ask:
1 - What caused the mass to change direction; and, why didn't anyone notice that force applied?
2 - How was that force applied to the inner mass?
3 - Why didn't that change have any noticeable affect on the surface?
I feel inclined to call this "misreporting" or even "bs".
Anybody else have a take on this?