I doubt it, if Born Free managed to shut down all of the other dolphinariums, I don't see why this would be any different. Also, if they hadn't have shut down, I doubt they would have had several million to spend on a new facillity and, judging by many peoples' reaction to captive cetaceans, it wouldn't have been particularly good for PR, anyway.
Either way, it's irrelevant because Windsor did close down (and, I really enjoyed the new Legoland).