I will have to look up Urban Jungles-Radio, I would like to hear what Robert Walter says.
I also would not be surprised if it was fake ice, the water was warm, contestants faked it etc. etc.... That still does not make it ok to dump live animals into deep water with a freaked out person flailing around. The contestant in the video could easily have injured and or killed an animal especially when she was pulled back out of the water and they were hanging around her.
There will always be some dramatization, but it is evident that live animals were used, and it could have caused death or injury to the animals, that in its self is enough to get people upset, no matter the amount of dramatization.