They had like a split second to pull that off and it actually made my stomach turn the first time I saw it because at the end, when he pulls her into the air, his harness or whatever it is, unwraps from his leg, and then right when they're about to miss the mark, Britney helps him sling it on and as she is, he just starts lifting her into the air! Either way it was kinda exhilarating to watch and another great performance! <3
By The way! I love this performance is so professional because as mentioned here she doesnt have anything holding her that's exciting but scary, like we saw in this video!