sorry to hear this my friend. as others have said, watch the dog closely. more so with the baby any time now because if the dog has turned then all small beings can be a target for it. not saying that is why things happened today as they did but my buddy had to put his husky down many years ago.
my sister breeds Weimaraner's for show and hunting if something happens and you need a new pup.
again, sorry to hear man!