Some quick sums For what they are worth.
Falling under gravity alone from 1000 ft. v^2 = 2gs ( = 2*9.8*305= 6000 approx), so v=77 m/s
whereas 1000 ft/min = 305/60 = 51 m/s vertical speed.
So the aircraft was indeed coming down at an incredible vertical speed, not a lot less than free fall, although apparently under power.
Also 130 kt= 130/1.944 = 69 m/s (horizontal speed)
Pythagoras gives TAS approaching ground level as
TAS= sqrt(51^2 + 69^2) = sqrt(2601 + 4761) =sqrt(7362) = 87.2 m/s = 173 kt ( approx).
and approaching at angle arctan(51/69)=arctan(0.74) = 36.5 degrees from horizontal.
SB