Would pitot freezing explain altitude going from 37,000 to 0 with no speed reduction? It seems more likely than controlled flight into the sea? Or perhaps there were fumes of some kind and the crew were overcome? Or an undetected hypoxia event?
The lack of flotsam and jetsam suggests (to me anyway) that the a/c did not disintegrate at high altitude and is more likely to have hit in one piece, similar to AF447. Wing separation pre-impact might explain distance between fuel slick locations.
Also now seems that contact was lost only 40 minutes out of KL but MAS was not told because no one wanted to raise a false alarm until all equipment malfunction explanations had been eliminated. I'd have thought immediate contact with MAS should have occurred so they could at least try ACARS or other alternative means of contact.
Really just curiouser and curiouser ...
