Flame me if you will.
So if speed is changed by a/c configuration, and going from Flaps 30 to 25 was a good thing, why weren't more flaps retracted?
It's a trade-off. Too much flap retraction at that height and speed, you drop like a stone. Hope you're not a pilot - no offence intended.
My apologies, misd-agin, I see you are a pilot.