Yeah, I have to agree that there's far too much blame shifting there. It's to be expected, though. BP is already losing a ton of money, so they'll want to avoid being found at fault if at all possible.
Here's another news story, one that recreates the events leading up to the explosion:
http://news.yahoo.com/s/ap/20100909/ap_ ... a_disasterThat one doesn't do much to solve the question of who is at fault, but it does put forth the idea that some people involved had worries about potential problems.