Watching the spill-cam now... They put the capture cap on and it doesn't seem to be working. They're jiggling it around hoping it will seat better but it doesn't seem to be helping a bit. It looks like it is sitting right on top of the pipe, so it isn't obvious why it isn't working. You'd think they would be able to start sucking up the oil since the cap is right on top of the thing, but I guess it doesn't work that way.
Maybe it is clogged already from the gas crystalizing, like the last attempt to put a box on top of the leak. Part of me wonders why they don't get a big rubber stopper and jam it in there with a few hundred tons of pig-iron. Or unbolt the dang flange connector just below the cut, and bolt on a new pipe interface. NASA has experience working with zero torque wrenches out in space (no leverage in space or floating under water) and maybe one of their wrenches can be scaled up to work on that thing.