By Bradley Jolly King Charles today displayed his vulnerable side on his first outing since his cancer shock, a body language expert told us. His Majesty, 75, waved stoically to members of the public and press at St Mary Magdalene Church on the Sandringham Estate, Norfolk. He was all smiles following his poignant thank you note to the public, in which he said he felt “the greatest comfort” after the diagnosis last month. But a body language expert noted Charles’ hunched shoulders as he walked to church today, something she said showed the monarch’s “more vulnerable side” amid the difficult tim…