If you look at the damages observed in:
http://www.hamburg-airport-friends-f...d=2607#pid2607
the pictures show that there is a little more to look at, and work on, that wing and the plane as well. Just take account of the scratches on the underwing-not the tip winglet. My experience as an old certification crew member yields something about the "g"-s of the tip ground contact; the elongation of the deformation was just elastic or... is it inside limits? I remember changing two years official letters with the designers before approving to service a TU154 which touched with the wingtip the snow in Berlin during a low vis app GA back in '80-s.