I agree, but I think she used it to lay the groundwork for why he disappeared. I think that's why she leaked the video to show a motive for why he would "run away" the next day. I'd say she had to come up a good reason before AS would allow her to ground him from his "highly important" switch, so she made up the candle incident. The text message sent to his dad the next day, which LS probably sent, asking if he could at least play Zelda suggests that he has been grounded from it, hence a reason for him to disappear with the switch in hand.