A friend of mine was part of the legal team on this, and when it was all over I was allowed to have a look over all the information.
I don't think I would have continued the flight in the same situation, but the fact that the powerlines were not marked on the map had a profound improved the pilot's defence case.
Also, the fact that the powerlines had been struck before and the power company had not fitted balls (or any other markings) to them since rendered them liable.
I am just glad that no-one was killed and the powerlines are now clearly marked.