A later comment from the site linked in the original post.
“Cable/Rope and NOTAM
By (anonymous) on Sunday, Aug 5th 2018 07:55Z
As one of the installers of the cable mentioned in this report i can ensure you, that the incident is unrelated. We watched the plane fly by high above us and heard the crash loud and clear. The cable was not installed at the time of the incident. Regards”