Am I at risk of an audit if I chose to file as an individual despite divorce paper work, which my ex-wife completed, suggesting filing jointly?

The divorce became official as of November 10th, 2016.  My ex-wife was the one who originally filed for divorce and when filing she checked the box stating that for 2016 taxes we would be filing jointly. Her and I spoke and now both prefer to file as individuals. Is that ok, or must we do it the way the divorce paperwork shows? I just don't want to take any possible chance of getting penalized for such action in an audit.  Any help would be greatly appreciated, thank you so much!!