Lawyer sent a letter marked "without prejudice save as to costs" to arbitrator prior to arbitrator reaching decision on substantive matters. Complaint by opposing lawyer that this constituted a breach of r 13.9 of the CCCR. Standards Committee considered whether lawyer had breached privilege and found breach of r13.9. LCRO advised parties of his preliminary view that r13.9 related only to the issue of privilege in the context of discovery and called for submissions / comments. Respondent (complainant lawyer_ responded that r13.9 was irrelevant and that the issue fell to be determined in accordance with general professional obligations (rules not exhaustive) and rule 2 (requirement to uphold the rule of law). Applicant's counsel agreed with LCRO preliminary review, observing that disputes over the status of without prejudice documents were commonplace and were to be resolved by the judge or arbitrator. He considered it would be 'intolerable' for litigators to be exposed to adverse di…