Bushy, the FO, who was flying the aircraft got out of the slot and inititiated a go-around.
A contributing factor to this was the stupid SOP that if the capt was flying he could leave the AP engaged down to minima, however if the the FO was flying then he had to disengage and fly manually below 1000 feet. SOP's are now that either pilot can fly on AP down to minima.
After the FO had initiated the go-around the capt took control and then attempted to land. There a quite a few attempted explanations as to why he did this, many relate to years of base and simulator training, where the capt would take over and land on a trainees landing. In reality we all know that initiate a go-around, you complete it, you don't change your mind mid-course.