Great series. Looks more like a successful mating to me, although I guess it's possible the smaller male is eating the female. It looks like she's recently moulted anyway, so she might be very vulnerable until her skin hardens. In any case it looks like he's timed it well. I wouldn't be surprised if Goliath ate David as he made his exit though...
Great captures, especially that last one. I'd try out a tight crop to focus in on the action.