This is apparently shaping up to be an occurrence of a bad landing followed by the crew's decision to not go around. It sure looks like a hard/bounced landing and an attempt to salvage it with disastrous results.
Contrary to popular belief, the MD11 is not that hard to land, but it requires strict attention to procedures. The reported winds were just not that bad, and the shear reported wasn't severe. The ref speed was fairly typical.