The apparent absence of rotational kinetic impact damage on the fan blades points at little to no power developed at impact. A late change of plans from 24 to a straight in 18 would have left them hot and high: close throttles, barndoors out, nose down, and by the time low energy became apparent, it was either too late due to preoccupation with some other issue, or a compressor surge (for whatever reason) prevented spooling up in time leading to the result at hand. Judging by the fire, fuel starvation appears unlikely
not so fast
The engine could have creamed the rear-end (not the fan) when it hit the hill, tail first. All the picture shows so far is after the engine dislodged from the wing and flew a bit farther.
The folks on scene already know this answer even without the DFDR so I'm intent on listening for a clue in the next NTSB summary.