Just wanted to give an update on this issue.

I have been disabled the traction control as a workaround since I don't drive this car that often.

I'm driving it more lately though, so I thought I would see if the steering position sensor was dirty. It was clean as new, but the clockspring was kind of a disaster. It fell apart as I removed the steering wheel. So I decided to replace it.

After that, and a bit of difficulty with the recalibration, I have not seen the issue since!

It's only been a few days, but I'm hopeful. The clockspring ribbon could have been binding during turning and maybe that affected the steering angle sensor somehow. Not sure, but I'll be happy with the result!

Thanks for all the input and ideas.