Another "Gotcha" moment in debate this time by an audience member!

In this classic moment in debate a woman asks the atheist how he could believe atheism is true if he admits he has no evidence showing it's true?  In a weird twist the atheist admits he can't prove that his atheism is true but then he says "I am not claiming God doesn't exist".   It gets very uncomfortable as the atheist seems very uneasy about the corner the lady paints him into with her question.