Sorry to hear that! I wouldn't have kept the meat either. I know lots of people do that and when we have ones die on the farm they have questioned our sanity when we tell people we buried them but, they were sick. I have a weird way of thinking on this but I don't think its good for me to put an animal into my body that was ill or that was abused.
I have been thinking about that a lot lately actually. The way I see it is that livestock made a trade with mankind. In the wild they have a pretty low chance of making it to adulthood. In exchange for us giving them shelter, safety, food and health in the end they give us their lives. As a farmer its our responsibility to stay true to that word. In my opinion, that is exactly what you did.