You can see in that recording that the lady spider seems pretty uninterested in what the male is doing. He waves his arms, he waggles his knees, and when he finally makes his move, he's totally rejected. He doesn't even seem that intent on staying in her field of view, though. It's possible that this is actually intentional, since cannibalism is not uncommon in the jumping spider world, at least in captivity. If 'eaten alive' were a potential option before and after sex, you might also be hesitant to really commit to the mating ritual.