It actually did have quite a bit to do with the control laws on the A320, or rather the pilots lack of understanding of them.
He thought that the Alpha-floor would kick in, effectively doing the go-around for him. He was however un-aware that when your that close to the ground in the landing config, the Alpha protections are inhibited to allow you to land.
Unfortunately he realised this too late, and by the time he put the power on, the writing was on the wall. Or at least thats my understanding of what happened.
He's still in jail in France i believe. Poor bugger