LTE???? Har har har, the Bell Spin Team is high-fiving and celebrating the total brainwashing of the junior rotary community. The term LTE is firmly embedded in the skulls, and is brandished whenever some poor coot runs out of power pedal, be it from altitude, bad wind direction, or pilot pushing his luck.
With a NOTAR, surprise surprise, THERE IS NO TAIL ROTOR. Yes, he may have run out of anti-torque power, but it ain't LTE.
It certainly looks like a simple case of running out of power, a right turn which doesn't get corrected, the momentum builds up, a bit of nose-down pitching occurs, and splat, or as they say hereabouts, Geschplattenzerden.