Based on what I saw and what I read, it only took over of it detected you trying to swerve and an obstacle that would hit and change it into an aggressive lane change. The steering into was at least roughly the maneuver desired, but it just corrected it.

Though it may sound scary, it absolutely worked in my scenario. I've never ever seen it activate accidentally.

I can't even be sure whether it activated or not that time, I wasn't driving. It just seemed like a scenario and maneuver unlikely for a barely driving 15 year old to pull off so perfectly. I'm not so sure even I would have avoided an accident, but even if I did, I doubt I would have hit the maneuver so spot on.