Dispensing power of sheriff
2.—(1) The sheriff may relieve any party from the consequences of any failure to comply with the provisions of these Rules which is shown to be due to mistake, oversight or other excusable cause, on such conditions as the sheriff thinks fit.
(2) Where the sheriff so relieves a party the sheriff may make such order as the sheriff thinks fit to enable the application to proceed as if the failure to comply had not taken place.