Thanks for sharing. Looks like the gyroscopic forces that people talked about on this thread. The fire post flameout looks like a bearing failure. Really unfortunate crash but great reminder that if the engine quits in a flat spin induced by the vector, there is probably no way out unless the altitude is huge and even then may not happen.
The pilot did an amazing job. Super smooth and controlled flight. Would love to know what turbine was used. Clearly not the one to use for 3D whatever it is.
I'm pretty sure the engine was a JetCat Pro series.