Count Carrie Underwood as one of the esteemed members of the “Fell On My Butt During A Concert” club – but, she certainly had good reason. Carrie was performing in Myrtle Beach, South Carolina at the Carolina Country Music Festival over the weekend when the heavens opened up and it rained – hard. Carrie wasn’t about to give up, crushing her performance despite the elements. It was at the end when Carrie was saying her goodbyes that she walked off the back of the stage and suddenly disappeared out of sight – apparently slipping down some rain-soaked stairs. If her next-day post on Instagram is any indication, the singer is thankfully OK.