Could it be possible that the PF was pushing on the cc while temporarily suffering from the false pitch up feeling caused by the somatographic effect, and the PM was pulling on the cc having seen the unusual attitude develop, this could explain the long duration of APND trim input. As long as the PF is pushing harder than the PM is pulling, then the main trim will operate in the direction the PF is commanding.
Also, what use is a HUD during a go round, it's designed to allow you to follow the instruments while looking out. Why would you want to look out?