QR & O, Vol 2, Ch 102, Sect 1, Art 102.01 (1)(c)
102.01 – PERSONS SUBJECT TO THE CODE OF SERVICE DISCIPLINE
Section 60 of the National Defence Act provides:
“60. (1) The following persons are subject to the Code of Service Discipline:
(c) an officer or non-commissioned member of the reserve force when the officer or non-commissioned member is
(i) undergoing drill or training, whether in uniform or not,
(ii) in uniform,
(iii) on duty,
(iv) [Repealed, S.C. 1998, c. 35, s. 19],
(v) called out under Part VI in aid of the civil power,
(vi) called out on service,
(vii) placed on active service,
(viii) in or on any vessel, vehicle or aircraft of the Canadian Forces or in or on any defence establishment or work for defence,
(ix) serving with any unit or other element of the regular force or the special force, or
(x) present, whether in uniform or not, at any drill or training of a unit or other element of the Canadian Forces;
Unfortunately the guy making comments in the media and signing his name/rank doesn't appear to be subject to the CSD.
But there could be something else somewhere about 'comms with the media' that might add to this one QR & O ref.