Certainly many if, buts or maybes here.
I did read up about the Sharrock case and his history, there was/is no history to read accept being a well respected trainer and horseman. Alan is a true advocate to the horse industry in my opinion and has been for many years.
On the other hand, Turnwalds' partner who was in care of the dog, has previous charges from the greyhound industry through changing dogs racing records and had been banned as a trainer for doing so.
No question the dog had been given the substance at some point, by who? - looks like too many avenues to go down. It was always my understanding that if a dog was a swab dog after a race, it shouldn't be touched by anyone other than the HANDLER at the conclusion of the race. So there is negligence here also?