Judicial review – Statutory interpretation – Whether the industrial disputes tribunal has the statutory authority to replace more than one member of a three-member division after the hearing of a dispute in relation to which it was constituted has begun and before an award is made – Whether the matter should be remitted to the industrial disputes tribunal for the hearing of the dispute to commence de novo – Labour Relations and Industrial Disputes Act, sections 7, 8(4), 10, 11, 12 and 20, Civil Procedure Rules, 2002, rule 56.16 (2)