lomapaseo, yes, re parsing - precisely; the suggestions are absolutely tentative but I think growing more reasonable. The energy gained would be from the height, (vertical speed), not from forward speed. That said, takata expresses the notion of high forward speed; perhaps - it wouldn't take that high a speed to fragment the airplane as it has been - 200kts would likely do it.
fredgrav;
Yes, I thought of the Gulfair accident a few days ago but didn't feel as though enough was known about final attitudes of this aircraft. The comment that the airplane was pointed downwards, although unconfirmed still, does make one consider the possibility more seriously. I think knowing exactly what the weather conditions were like is now more important. I know what the METARS say but there are also comments about pockets of mist and the possibility of '2km visibility', (Dutch article previously quoted).