The visible portion of the radome pic
http://www.pprune.org/rumours-news/5...ml#post8832757
shows a similarity to the earlier pic of the fuselage frame that retained its circular shape but was neatly stripped of skin. Rivets pulled through without gross deformation seems less consistent with an impact than with an impact overpressure blowoff where pressure is applied internally and uniformly over the part. Thanks training wheels for including sources.