Procrastinating paid off! The way of the slacker has worked for me
@steamroller 
Let the car sit all week hoping for a warmer day to test things. Never happened.
Now it’s the weekend again and we need groceries as we didn’t stock up last week when the power steering died.
My wife would rather take a bus shopping than skip a few weeks so I checked it out this morning in -15*. Fully expecting nothing to have changed I started the car anyway to make sure it was still broken before pulling fuses and checking connections.
No red steering wheel symbol lit up. After a few minutes I lightly turn the wheel with one finger no problem.

So I told my wife to only go to the closest grocery store so I could walk there and drive it home if it failed again.
A while later I get a call from her saying she’s off to the next store just a little further away. She’ll let me know if there’s a problem.
I see a possible bus ride in my future.
As this is my first electric steering, and the cars 10 years old but softly driven, I’m not sure what issues are common/normal and what’s just flat out strange. But this sounds like it needs further investigation, once it’s warm enough not to get frostbite.
We’ll take the win for now.