The Sedin twins have decided to end their short-lived retirement from dancing.They have already begun training for the World Cup of Dance, the most renowned dancing competition in Europe which will take place in Spain this summer.Buoyed by their performance of the Cabbage Patch dance on a recent NHL commercial, Daniel and Henrik decided to take a run at the world championship."When I saw how quickly it took me to get the Cabbage Patch and the Running Man down, I said 'Bring on the Viennese Waltz,' " Henrik said.The dancing marks a major turnaround for the twins who, much to the chagrin of their fans two months ago, famously declared: "We will never dance again.""Sometimes things are said in haste," Daniel observed. "At the time we felt we had done all we could do in the dance world. But then Henrik came over for Friday dinner showing off his foxtrot and I said 'Let's waltz.' "