Well, elfman2, I'm glad you did what you did! But you did so in reference to a moral code in which proving your honor is important (and which is therefore in your self-interest to maintain). Your objectivism works to have you return the money only because you have a moral code that defines your self-interest. Many people in the same situation (including objectivists) could care less about proving their honor. They wouldn't return the money. Sad, but true.
A big part of that moral code is part of Objectivism or at least derived from it, just as yours (I presume) is from Christianity.
I think I'm no longer an Objectivists because of a few minor differences, and AFAIK Objectivism is very strict in its definition. It's not an easy path of study, no one falls into it, so those who stay are likely to do as I did. But I hope one day that something very close to Objectivism gains such prominence that it's taken for granted like Christianity! LOL I think Christianity's remarkable for all it has done for all people and how well it has weathered it's success.