How do I appropriately address dropping/withdrawing from formal recruitment?

[sweptbystars]

I posted a few months ago about dropping/withdrawing from my university's formal recruitment process in October. I'll admit that I am an idiot for doing so, and could have found a home if I saw recruitment through to the end. I can't change the decision I made, but I can change how I approach informal recruitment this upcoming semester.

I'm currently signed up for an interview with a national representative from the sorority that is colonizing on my campus. Four of the eight chapters on campus are having informal recruitment. I plan on attending the events of two of those (the rest have conflicting dates) in order to maximize my options/chances. The application I had to fill out for the interview did ask if I went through recruitment before. I was honest. I expect to be asked some question(s) about my experience, so how do I respectfully/appropriately approach any direct question about withdrawing from recruitment (should it come up at any time with any of the chapters)?