By Zara Woodcock Jedward slammed Louis Walsh as a ‘cold-hearted b*****d’ after the former X Factor judge called them ‘vile’ on Celebrity Big Brother. On Tuesday night’s episode of the ITV episode, the 71-year-old music manager and TV star spared no time slamming stars he worked with over the years. He discussed Jedward- who he managed between 2009 and 2013 – with CBB housemate and Coronation Street star Colson Smith. During the chat, he called them ‘vile’ and said they were simply a ‘novelty’ act but were ‘great for the show’. He added that he earned a whopping £5million for managing them. Jed…