I do not believe CBS allows you to start fresh unless your prior application was more than a year ago. Essay #2 was ditched, so they obviously didn't like their own question as much or maybe more than you didn't like your answer.
The best you can probably do here is go back to the spirit of the question - what makes you *you* and then work that into your reapp essay. Allow yourself a paragraph of personal growth and this will allow you to have a redo at that whole subject.
Part of the whole challenge to a reapp essay at Columbia is how well you can work within the confines of the assignment - can you update, reflect, promote, and showcase all at once? It's not terribly easy, but there is ample opportunity to get the job done. Eyes forward is my advice.
-PL