Guys,
I have another theory. At 100m they did not attempt to make GA, however they tried to level the flight by using the autopilot. If you look at FDR N1 chart, you will see the slight increase of N1 at the moment they decided to abort the landing (shortly after first PULL UP of TAWS). I guess they set the ascend/descend rate to 0m/s in the autopilot which seemed to be a safe move to them as they thought they were 100m HAA and the ATC confirmed they were on the glidepath. It seems to me, they just wanted to fly above the airport leving the decision to land at a very last moment... What do you think ?