While it sucks that the animal had to die, you did the whole community a service with this post.
Too many times, people make ASSumptions as to why their animals passed, and these assumptions ultimately result in a more ignorant community. Most people would have written it off to substrate impaction or some other mysterious issue.
By taking the time and expense to perform a necropsy and by taking the time to post the results here and share them with your peers, you are educating anyone who takes the time to read your post.