Anti-roll bar links are probably gone. To check, use a pry bar between the link and the anti-roll bar. There should be absolutely NO play. If not sure, remove from car, and move pivot. If it moves freely, it is probably worn. These are notorious for failing on the 850. All dealerships stock tonnes of these. They are currently on the 4th redesign. The newest design is quite a bit cheaper, and appears to be the best so far.

I used to get what sounded like a spring unloading whenever I turned a lot to the right. I changed the anti-roll bar link, and no noises since.

If it isn't the spring seat, or the anti-roll bar links, I'd better it's the anti-roll bar itself. Though not nearly as common, anti-roll bars have been known to break on the 850. Because they break at the flex point, which is surrounded by the vulcanized rubber bushing, it is impossible to diagnose visually.