and if i'm not mistaken any fluctuation in the pressure ratio could actually lead to these vents getting bigger or potentially even producing new ones. so you would not only have even more oil spilling into the gulf but it would also become more likely that the giant methane reservoir gets involved too in one way or another. it's a domino effect that they simply can't control and all they're doing right now seems more like desperate diversion measures rather than 'real' efforts to put an end to this catastrophe...