Check out his video and notice the flange where the marine riser (upper cut-off part of the pipe) is connected to the blowout preventer (lower part). Why can't they unbolt the flange and then bolt a new valve onto that and then close the valve?
http://news.yahoo.com/video/us-15749625 ... d-20247596Oh that's right, I forgot. The BP people are a bunch of f-ing morons.