I agree with Kevin 100% It was a horrible tragedy, accident, but in no way was it the animal's fault. They don't act with malice, only out of instinct, and to punish it or euthanize it as some "reactionaries" have suggested is uncalled for. He can't be set free at this point, but contact with him should be as minimized as possible. As much as I enjoy seeing these creatures up close (as I would have no other ability to do so any other way), maybe it is time we reexamine keeping such majestic creatures penned up their whole life.
As a child, my brothers brought home a wolf puppy they found in the woods, who was malnourished and alone, which is unusual for wolves. Of course, they wanted to keep it as if it were a German Shephard or something. We did keep it for a day or two and it was wonderful to hold, feed and "love-on" such a beautiful creature, but we contacted our local Brookfield Zoo and given that it was too young to survive without pack protection, he was gladly accepted and lived a wonderful life at Brookfield. The zoo assumed something had happened to the mother. I remember going to see "Shadow" many times as a child. My father explained that while he might be a loving companion for a while, at some point, a wild animal is just that, wild. It had instincts that would far outweigh any sense of loyalty it may have to us. There's always the element of danger.
I hope Tillikum lives out his days in peace and is not branded with title of murderer.