Hi vilas, I think you've made my point for me. Because neither PF nor PM were practised enough, this wind-shear event caused them both to panic and do the wrong things, and not do some of the right things.
Had they been sufficiently practised, they would have smoothly performed the drill, both PF and PM working together.
The "startle effect" is an overused excuse. Pilots are, (or should be), trained for and have practised all the memory drills and will have performed many of the QRH drills, so there should be no startle effect.