Revealing mistake: When Aunt Clara "parachutes" in the background is not the neighborhood background shown throughout series with Kravitz across the street...and no pine forest. It's obvious a stage background.
Witches and Warlocks are My Favorite Things - S3-E3
Revealing mistake: When Samantha, Darrin, and Aunt Clara are "frozen" in the living room by Hagatha, Enchantra, and Endora, just as Maurice is summoned and appears, Samantha moves her right foot noticeably while Darrin and Clara remain frozen.
Charlie Harper, Winner - S3-E25
Revealing mistake: When Endora "freezes" Daphne, you can see her breathing and rocking gently from side to side showing that she is not frozen.
Answer: Larry had been telling Darrin what it means psychologically that Samantha gave the coat away. Larry said giving it away meant she's happy being married but if she liked the coat it means she desires to be single and carefree. So when Darrin sees the coat, he immediately thinks Samantha doesn't want to be married and the fact that she twitched it means (in his mind) she wants to be a single, carefree witch again.
Bishop73