[Retroman1969]

Thanks for the reply!
I didn't, but I have never had such an issue, so I didn't think to ask for it.
It's hard to explain, but the rears had fairly extreme negative camber which quickly wore out rear tires. I had that "corrected" and they did a full alignment while at it. It's possible they got the toe settings off. Before all of this, it was as stable as a rock at any speed with any maneuver.
Now when steering the slightest bit off center at higher speeds, the car grabs so quickly and violently that it actually tries to slingshot itself in the opposite direction.