Got a reference for that ? Just because it's common sense, doesn't mean that it's correct.
The general case question would be "Can someone who is authorised to conduct flight reviews (defined in the regs as 'an appropriate person') conduct their own flight review ?" I don't know of anything in the aviation act, regs, orders, aip, etc that would prohibit this, either explicitly or implicitly.
Well these are the regs, to me it clearly means that someone else needs to be in attendance, whether you do is up to you.
Of course having a CASA inspector review the boss may mean a conflict of interest, afterall not many employees are going to fail their boss
5.108 Commercial (aeroplane) pilot: regular flight reviews required
(1)A commercial (aeroplane) pilot must not fly an aeroplane as pilot in command if the pilot has not, within the period of 2 years immediately before the day of the proposed flight, satisfactorily completed an aeroplane flight review.
Penalty: 50 penalty units.
Note A pilot who flies aeroplanes for an operator to whom regulation 217 applies will be required to undertake proficiency checks at more frequent intervals.
(2) An aeroplane flight review must be conducted only by an appropriate person and, unless the person otherwise approves having regard to the circumstances of the case, must be conducted in:
(a) an aeroplane:
(i) of the type in which the pilot flew the greatest amount of flight time during the 10 flights the pilot undertook as pilot in command immediately before the flight review; and
(ii) unless the type of aeroplane mentioned in subparagraph (i) is a single place aeroplane — that is fitted with fully functioning dual controls; and
(iii) unless the type of aeroplane mentioned in subparagraph (i) is a single place aeroplane or is not fitted with wheel brakes — that is fitted with dual control brakes; or
(b) an approved synthetic flight trainer appropriate to the type of aeroplane mentioned in subparagraph (a) (i).
Note For appropriate person see subregulation (8).
(3)If:
(a) a commercial (aeroplane) pilot undertakes an aeroplane flight review; and
(b) the requirements of subregulation (2) are not satisfied in relation to the review;
the pilot is taken not to have satisfactorily completed the review.
(4)If a commercial (aeroplane) pilot satisfactorily completes an aeroplane flight review, the person conducting the review must make an entry in the pilot’s personal log book to the effect that the pilot has satisfactorily completed the aeroplane flight review.
Penalty: 10 penalty units.
(4A) An offence against subregulation (1) or (4) is an offence of strict liability.
Note For strict liability, see section 6.1 of the Criminal Code.
(5) A commercial (aeroplane) pilot who has, within the period of 2 years immediately before the day of the proposed flight:
(a) passed a flight test conducted for the purpose of:
(i) the issue of an aeroplane pilot licence; or
(ii) the issue, or renewal, of an aeroplane pilot rating; or
(b) satisfactorily completed an aeroplane proficiency check; or
(c) satisfactorily completed aeroplane conversion training given by the holder of a grade of flight instructor (aeroplane) rating that authorises him or her to conduct aeroplane flight reviews;
is taken to have satisfactorily completed an aeroplane flight review.
Note Conversion training given by a person who does not hold a flight instructor (aeroplane) rating must not be substituted for a flight review.
(6)For the purposes of paragraph (5) (b), a commercial (aeroplane) pilot is not taken to have satisfactorily completed an aeroplane proficiency check unless the organisation that conducted the check has made an entry in the pilot’s personal log book to that effect.
(7)CASA may approve a synthetic flight trainer for the purposes of paragraph (2) (b).
(8)In this regulation:
appropriate person means:
(a) an authorised flight instructor who holds a grade of flight instructor (aeroplane) rating that authorises him or her to conduct flight reviews in aeroplanes; or
(b) an approved testing officer; or
(c) a CASA flying operations inspector.