Holy cow, that's a crazy failure. Many cars have a zone between idle, and some greater RPM that is essentially a no charge condition. But what a consequence! Having dimmed lights, or an erratic instrumement display is the worst I've seen.
My older Honda has a fairly wide zone, 600 to about 1200 RPM. Annoying on high load days, and I've often wondered why this isn't designed out. Maybe it's wider due to car age and component wear / variation. I've installed a pretty great battery and see a little light dim, and that's about it.
One day I had an alternator failure and some distance to drive to get a new one basically. Made it, but right near the end, the instrument panel would go into reset and the car into some limp mode. Not the end of the world, particularly given I was expecting some failure as battery voltage dropped below 11 volts.
It was close enough to lose instruments entirely, but the engine ran anyway. All in all, it was a pretty graceful failure.
That rando full torque action seems crazy! And at 10! That's definitely a scenario, as you have found out, that can happen enough to seemingly be a problem.
So, what happened! Suddenly, your car is off the road, or what?
Seems like your sore thumb is the least of the potential bad things going on right then.
The first time I did it, my thumb was dislocated because it was inside the wheel! Didn't realise quite how powerful power steering systems are!
Now I have tape over the heated seats button with a warning to only use them or the rear defroster, not both.
Fun fact: The power steering uses 170 Amps when turning the wheel fast! Of course the voltage drops!