"Uh, Earth’s Inner Core Just Stopped Spinning"

It shouldn't be a problem.

I think.

From Popular Mechanics, January 23:

Yeah, the inner core spins separate from the rest of Earth

• Earth’s inner core’s spin has slowed and “paused.”
• Scientists believe this happens roughly every seven decades as the core will then start spinning a different direction.
• A new study says there’s a direct connection between the inner core’s spin and life on Earth’s surface.

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Earth’s inner core stopped spinning. But don’t fret, it appears this happens from time to time, say every seven decades or so.

A new study published in Nature Geoscience by geophysicists Yi Yang and Xiadong Song of Peking University in Beijing explored the nature of movement of Earth’s inner core, largely made up of iron and molten liquids. They found the inner core’s movement recently reduced enough they consider it “paused,” all part of what “seems to be associated with a gradual turning back of the inner core as a part of an approximately seven-decade oscillation.”

The last turning point was in the early 1970s....

....MUCH MORE  

One possible concern is that the Earth's magnetosphere deflects cosmic rays so that during the period of the rotational pause it will probably be rainier (see Svemsmark or CERN's CLOUD experiments) 

And the cancer. 

But it's probably nothing. As the sun is moving into its most active phase the coronal mass ejections are sweeping galactic cosmic rays away, the "Forbush Decreases."

 

So it's all good. As long as the CME's don't destroy the electrical grid, leading to the loss of 90% of the human population in the Northern Hemisphere within two years and leaving a societal hellscape where the living will envy the dead.