The omission from the preliminary report of a windshear warning for the second approach ( as opposed to the first where they identified it) has me thinking that the go-around decision was not based on a windshear warning and that a normal go around was the intention. This is backed up ( in my mind) by the raising of the gear and selection of flap 15. The fire walling of the engines is an issue. This speaks to the state of mind of the PF and introduces challenges to flight path / airspeed / attitude control that are significant.