I can't find any reason for the line to have come out both lines have a ton of slack, and the picture shows the swaybar as high up as it goes as the suspension is fully unloaded and it's close but it doesn't even touch the lines.
Also the inside of the hose is totally smooth and doesn't show hardly any signs of having a single barb pressed into it. It isn't torn up at all but i'll tell you this the ID of the line looks much bigger than the barb fitting(i know it may have expanded but seriously it looks like the joint was barely held together at all).