Mommy Spanking Daddy as a Lesson for Three-Year Old?

One of little kennie ham's Answers in Genesis (AiG) talking heads discussed in a video how he explain Jesus dying for our sins to his young son.  According to his story, his son did something wrong, so instead of being spanked, Daddy [Terry Mortenson of AiG] took the spanking in his place.  Apparently he let his wife spank him with a wooden spoon.  Don't believe me, you can watch the video of Terry talking about here, and no the video isn't one of him being spanked!

Huh?

What lesson did the child really learn?  "Oh look, I can get away with something and watch Mammy spank Daddy!"  Is a child really capable of understanding this very abstract concept, especially a three-year old?  In any event, Terry might get to look forward to many more beatings . . . how kinky!  Terry might be glad his son was three, because an older child would have whipped out his cell phone and captured the video for all the world to see!

Here is my main issue with this scenario -- There are so many transgressions a child can commit that are not sins!  Plus many of the 'sins' are only sins in one particular religion and not sins in many others.  Of course, since Terry is part of the very narrow version of Evangelical Christianity -- Ham's AiG -- whatever the child did, it certainly may not be a sin in other belief sets!  How confusing that might be as that child grows up.

Actually if I were Terry's little boy I would be very, very careful.  After all Terry's God killed his only son to protect followers from his own wrath.  A note to Terry's son, watch it when Daddy gets mad at other people!  You might want to duck and cover.