This made RuairÃ Ã `` BrÃ daigh lead a small walkout , just as he had done years earlier to create Provisional Sinn FÃ in . At this , RuairÃ Ã `` BrÃ daigh led a small walkout , just as he and Sean Mac Stiofain had done sixteen years earlier with the creation of Provisional Sinn FÃ in .