56.12.1 The Court or a Justice may of its own motion or on application by any party:
(a) direct that any costs which have been improperly, unreasonably or negligently incurred be disallowed; or
(b) direct a Taxing Officer to examine the costs incurred in a proceeding or in taking a step in the proceeding and to disallow such costs as the Taxing Officer finds to have been improperly, unreasonably or negligently incurred.
56.12.2 Where costs are disallowed pursuant to rule 56.12.1, the party whose costs are disallowed shall pay to each other party the costs incurred by those parties in relation to the proceeding or step in respect of which the party's costs have been disallowed.
56.12.3 Without limiting the generality of rules 56.12.1
or 56.12.2, the Taxing Officer shall disallow any costs which the Taxing
Officer finds to have been improperly, unreasonably or negligently incurred.