They’re really running with this sabotage meme. Collected on the net today:

From what I’ve read, random explosions just don’t happen and those in the field suspect sabotage, perhaps the eco-terrorist type, as no new drilling is the result. This rig is about 60 miles out, beyond the 12-mile territorial boundary but within the 200 mile economic zone. It was anchored to the seabed about a mile down, where I believe the original break was located, making it too deep for a diver to plant explosives. That’s assuming the info is accurate, which is doubtful when talking oil companies and the gov’t. However, a sub or even a mini-sub aboard a larger ship could do it, I’ma guessing. The extensive economic and environmental damage for years to come could make this way beyond the Valdez, giving many the motive to do such a thing. Didn’t Chavez just purchase some Russian subs?

A normal sub, as opposed to a deep diving submersible, can’t get anywhere close to a mile deep without being crushed like a beer can. It could attack the rig with torpedoes or missiles but to say the least that could not be done clandestinely. A submersible would require a mother ship very close by, certainly within sight of the rig. You might think someone would notice and ask what they were doing.