At the risk of making an idiot of myself again, can I suggest that there may be evidence from the photos of minor fuselage damage adjacent to the prop?
Between the last 'w' int the 'www.t-city.de' marking and the window above, there is what looks like a dent. To the left and below the first 'w' is a liniar mark running down and back, and running from the lower end of this forward and down is what looks like more damage. Whether this was caused by the wire, by fragments from the prop, or indeed is just dirt, I don't know.