Subject to Section 1286.8, the court, unless it vacates the award pursuant to Section 1286.2, shall correct the award and confirm it as corrected if the court determines that:
(a) There was an evident miscalculation of figures or an evident mistake in the description of any person, thing or property referred to in the award;
(b) The arbitrators exceeded their powers but the award may be corrected without affecting the merits of the decision upon the controversy submitted; or
(c) The award is imperfect in a matter of form, not affecting the merits of the controversy.