You deal with dangerous animals, accidents happen. I have no objection to Zoos or Aquariums. What's more I'm not entirely sure if I agree with the "space the size of a bathtub" thing. I don't believe the area they perform in is actually the area they live in between shows.
Animals also do behave differantly, while a 30 year old specimin apparently, this one might have just gone totally bonkers. It even happens with domestic pets where a dog or cat will go mean without any mistreatment involved (despite what PETA might say). For that matter people go off the deep end too.
Just like other animals that attack or maul people, especially regularly, I think it might be time to put this animal down. Or maybe release it into the ocean far away from land .
As fond as I am of my pets (A slightly less than a year old Pug Puppy, and an extremely elderly cat) I do not see animals as being akin to people in absolute terms. Sometimes with your beloved pets you need to keep reminding yourself of that, human thoughts, motivations, and personality traits don't apply despite how it might seem at times.
Thus when you look at a domesticated animal, or one in a Zoo, the logic occasionally used by PETA of like "how would you like it if someone did that to you" doesn't really apply. A wild cat or whatever *MIGHT* have a larger 'territory' in the wild, but it holds that due to needing to hunt. For the most part it's going to do the same stuff it does in an
enclosure. What's more for all comments that it would "do better in the wild" in the wild it doesn't get a vet, a constanty supply of food, and the danger of some meaner animal coming by and pwning it and taking it's territory.
Now granted some animals DO deal better with captitivity than others.
Killer Whales are apparently one of those species that meets with very mixed results.
Also I'm not entirely sure from what I've read that this isn't a case of neligence of another sort. When dealing with an animal like that, I'd expect people to work in teams. As things sounded to me, it was just the one trainer (albeit experienced) and a crowd watching her work. Had another couple of people been handy to help out, things might have turned out differantly. Especially if those people were ready with diving gear/tranqs/whatever they use.
I am thinking of like Steve Irwin before he died. When he went out to catch Crocodiles and such to bring back to his clinic on TV, even he didn't go out there totally alone to do it. He had other people standing by who worked with him and knew what they were doing. The ray that killed him was kind of freakish (not much that could have been done), if if some croc had bit his arm or whatever chances are even if he got mangled there were people there ready to do whatever it took and who knew what they were doing.
I do not see why the same type of set up was not being employed in dealing with a Killer Whale, especially one that had been a problem before.