Similar experience
I had a similar experience with my 2002 Jetta wagon, it sounded like a spring binding or something. It started about 7 or 8 months ago at about 65k miles and could only hear it when turning a fairly sharp corner, like when parking or making a slow turn. I tried looking at the struts to find the problem but couldn't see anything obviously wrong. Yesterday, at 84k, there was a large pop from the right side as I was turning a corner. I found the top size inches of the front right spring had broken off. There was corrosion on the inside of the spring which caused the failure. I had new tires and a 4 wheel alignment a couple of months ago at a reputable shop and there was no mention of any unusual wear with the struts or bushings.