A dog may need to be propped up because of hitting a heat wall or muscle fatigue or from pain. Im not saying any of these things were the case in this situation but having to prop one up dosent mean that its time to pick up. I feel he picked up when the time was right. And its not like the first scratch and the courtesy were 10 or 15mins apart. Nothing wrong with proping to scratch and as soon as your dog takes the bottom again conceding the show.