90 degrees left is interesting. Would seem a mid plane explosion the body would continue straight for a portion. TWA 800 I believe picked up speed before tumbling back to earth from my recollection.
The 360 degrees is apparently a spin.
I don’t think this looks like a hijacking, either bomb or mechanical failure.
Not being a pilot or engineer, I will leave it up to the Aero experts to figure this out but without a distress call, I’d bet on the explosion, terrorism or accidental.
Egyptair has confirmed they have found the wreckage