Their robot camera is looking studiously in another direction at the moment, but at about 9:10 AM the live feed was showing what looked like a cloud of flying stones. From the industry experts at The Oil Drum:
What the hell just happened?
Was watching - monitoring ROV turned camera away and then whoosh -- the chunky debris has me suspecting a sizable rupture in that kinked and perforated section of the riser.
And here's a low res screen shot from somebody's twitter account:
That's just one piece of debris. Watching an hour ago, there was lots more of it.
And here it is, courtesy youtube. Shit starts to happen around the one minute mark:
Update: or were they just trying to knock mud off the ROV (Robot vehicle?)?
Update to update: Nope. Something exploded. Frame by frame here.