Regardless of the 'bright lights' (perhaps the sun?), Autoflight mismanagement, fatigue, unstable approach, no glide path, low time on type, woeful support, whatever...To allow airspeed to reduce to
Vref minus 31kts is very hard to comprehend.
Just to put that in perspective, in my organisation, below 1000ft, a sustained Vref minus 3 knots would be an automatic fail in the sim.
As Ramius315 emphasises, Fly the aircraft, don't let the aircraft fly YOU