Another small irritant about this scene, in a movie that I otherwise love: Why didn't the Enterprise just pummel the Reliant with photon torpedoes and blow it up quickly instead of crawling away? The Genesis torpedo was clearly not ready to detonate since it was on a "build up", so it couldn't have been prematurely triggered in the process. Otherwise Khan would have rushed it himself. No one would have had to go into the irradiated engineering room. I think I just answered my own question there.