No doubt about it Casper. The obvious speaks for itself doesn't it.
I wish everybody else would simply get to the guts of the whole issue...namely, what else could cause the supersonic dive at full power? Forget the FDR/CVR/Position of co-pilot/3000fpm excursions/3 degree FPA.....it's all crap at the end of the day.
You just can't put a 737 into a 15,000fpm+ dive at full power with stab trim full down unless somebody does it deliberately...fly the simulator and try it...I have.