Also really quick: I am wondering what happened about 30 sec prior to the last data point, and about 32 sec prior to impact
I plotted the comparison between first and second attempts relative to when each attempt both descended through 1500' GPS altitude. (Point in question is near 65 sec past in second attempt.)
Images via Flickr:
GPS altitude and estimated pitch:
https://flic.kr/p/FEWW2p
Est Vert Accel and est pitch:
https://flic.kr/p/EKvmjG
If any are interested in the calcs I did (hopefully correctly), I'm happy to share the Excel file.