Found out it's not the ABS at all--it's a crapped out rear passenger-side wheel bearing. The ABS acts up at random times (no light or anything), and the mechanic said there's nothing wrong with the system. But as a bonus, the mechanic shows me a beautifully cracked front driver's side spring.
So now it's decision time:
--do I have just the one spring replaced? I have 112K on my car, so I'm thinking just one new spring might make the car a little cockeyed.
--do I just get new SVT struts & springs for the front? I had the rear's done just over a year ago.