If that’s a pic of this accident it is not as described. That plane went in most likely in a spin. Upright, spinning down like a playing card. Had it nose dived in from on high there would be very little recognizable as an airplane. Doesn’t change my guess. Loss of cabin pressure, (or cabin failed to pressurize) led to loss of consciousness due to lack of O2, led to loss of control.
More like 45 MPH and 6 degrees.
That picture clearly proves a relatively flat impact, like a spin.
It did NOT hit nose-first at a 45 deg angle.
No way.