FYI, I haven't listened to the podcast, so am just commenting on the podcast based on what others have said. I can understand a handler not seeing all the details of a run when it was happening. But as far as the slippery floor, wouldn't that have been obvious from dogs that went before?
When I listened to the podcast, I still didn't buy the handler's overall reasons for not scratching her dog. But, I will admit that some of what she said made a bit of sense. She basically used a "heat of the moment" sort of defense. My overall impressions is still that there should have been enough clues (with all the folks involved in a contest) that someone should have addressed the issue much earlier than it was. Remember, as someone said earlier, there are two different competitions represented in this thread. The one with the podcast was a multi day AKC trial. In that trial, at least at some point the competition was move to another area.