I surrendered father dog to the shelter because he was trying to attack his pups. Is this good decision?

I loved the father dog. He was the sweetest and the best of the best dog I have ever seen. With lot of grief and pain I had to make the hard decision of surrendering the father dog to an already over-crowded animal shelter, for the safety of the pups. The mother dog gave birth to a litter of 8 pups and the father dog was almost going to kill them, if I was any more late in stopping him. He also tried to attack the mother dog for no reason. I tried to find lot of alternatives but could not. Due to the pups being so fragile and utterly defenseless I couldn't do anything but surrender the father dog. When i took the father dog to the shelter, he knew he had done something wrong and the look on his face was pure terror and fear. His face grimace and i felt so bad thinking of that facial expression when getting home. I don't know what will be the fate of the father dog and now I feel very sad.