that was without a doubt the saddest thing i have read in a longtime, my heart goes out to you, being the owner of 2 living shepherds now, and 2 that have passed, they are without a doubt the most loyalist dog, they are like family, any dog is like family, rest assured he loved you just the same, and no you didn’t put him in that situation, he would have done that for you without the training, it's who they are, not a dangerous dog,
but a protective dog with the ability to know right and wrong, that is why the police use them. Rest in peace Zeus.