I hadn't used the club and I didn't bend it during the...

I hadn't used the club and I didn't bend it during the course of play. In that case, I thought I could just declare it out of play, but he (the rules official) said it was disqualification. ... I have no idea how it got bent. I didn't hit it all day, so maybe it happened (Saturday) and I never noticed until I pulled it out of the bag.