Surely a case for their defense would have been that they flew as far away as possible for the protected area whilst placing their aircraft only 50' of Class A. Further to this, although I am only speculating, was both the Aircraft and Pilot in Command capable of legally entering Class A? If not then their hands are tied and a case is to heard against the relevant authority for placing the lower limit of Class A in such a way it conflicts with pre-existing limits.
Also, I would wonder what was the actual impact to the wildlife? Was there any loss of life to the stock?
Just my own observations from an outsider not familair with the case or indeed to prevailing laws.
Cheers