I've said this before, but it is what it is.
I competed against Lockett at a natural NPC show and the top 3 guys/girls in each weight class were tested. Mike passed the test, and some others at the show did not (including the women's figure overall winner, doh!)
Mike works out across the street from my offices, and so I see him about once a month or so walking around, and I can tell you that he holds that level of conditioning all year round. In that "O" pic above, he didn't diet down before going out there. That's the way he is all the time, just freaky.
I'd say that Lockett is about 5'9", and probably weighs about 240-245 in those pics. His back is amazingly thick (just slabs of muscle hanging from his bones) like somebody referred to above, and his calves are also totally freaky. They're so big that they ruin his balance... how many times do you have a guy who needs to bring up his quads and tone down his calves???
One other thing, no matter what anybody says, he's a nice guy. Not like a lot of meatheads who look like crap, but still talk a bunch of smack due to the insecurities.