In the "Hanging by a thread" podcast, I think Stef was using the free gift to show that one person can retroactively approve of something another person did which -- without that approval -- would be considered immoral.
So I'm on the tree branch outside your window and I kick in the window. When you get home I explain to you what happened and you say "oh thank god you're alive... blah blah blah." So you just retroactively consented to my breaking of your window, and therefore I have not acted wrongly.
If you don't consent, you have the right to demand that I replace the window. That's what is meant by "immoral." I'm not a bad or evil person for kicking in the window, especially when I reasonably assumed you would consent. But if you don't consent, I am -- because technically my action was immoral -- required to replace your broken property.
At least that's how I understood it...