Just bring in some decent systems engineering bods to fix the problem and lock away the beancounters for a few months . Just because airbus have run scared for political / business reasons doesn't mean the original ideas were invalid.
Competition and Marketing reasons recommended FOR NOW.
It's a proven technology and just needs to be properly engineered.
To show that is PROVEN.
I am saying it was severed by a metallic Lithium flare in the battery beneath.
Did you see the ground wire destroyed? Did you understand the equivalent circuit i posted showing a HIGH current path capable to fuse the (ground) wire? Fire crews had to fight against fire in TAK taxiway? (in BOS they had)