Prima facie it appears that although not catastrophic but there was a wind shift, initially head wind shear then changing to tail wind. The head WS part caused excess energy situation leading to IAS increase and float that made the crew initiate a GA. Excess speed converting to height may have given the crew indication of +climb leading to retraction of the gear but wind shift to tail and increased drag from open doors of retracting gear made the aircraft contact the runway. With unlocked gear collapsing fuselage took the impact and was destroyed. If the gear was not retracted the aircraft would have survived. The only question that remains to be answered is whether the crew retracted the gear prematurely? From available information it is not possible to say that.
vilas,
Is that analysis presuming there was no thrust delivered from the engines? Isn't that the 'only' question that remains to be answered? I can't for my life believe the engines are so slow to spool up that they couldn't have arrested an impact from a bounce/wind shift (even in 49 deg C heat).