That's a great camera angle and exactly where my trouble was located. I notice that your 10 Lb vibration absorber is missing from the right rear bumper mount... I assume you removed it? Anyway, to answer your question (which I may not have stated clearly in my conclusion) my problem was with the bumper mount/shock absorber itself which holds the 10 lb vibration absorbers in addition to connecting the rear bumper to the car. As I said, the bumper hanger (which holds the 10 lb weight) also serves as a shock absorber and compresses and absorbs the shock when impacted, but what I don't know is whether they should be replaced once they've been compressed, say after a rear collision. I think that maybe when the car was new it may have absorbed the shock (impact) without damaging the shock absorber but after time it degraded (just my opinion) and lost it's resilience or possibly it could depend on the intensity of the collision. Now, this isn't to say that this is "your" issue but it could be. In my case the shock absorber was clearly loose and wobbled when I pulled up and down on it, I also found that the rubber bushings holding the 10 lb weights were dry rotted but rather than replace them, I removed them completely. I read in another post that others had done the same thing with no "obvious" negative effects. A replacement bumper hanger/shock absorber runs about $150 or so (without the 10 lb weight) but I bought one used for about $50 and it was in good condition. Hope this clears thing up. Good luck and please post what you find.