So, one might ask, what difference does it make whether I got 73 pages of redacted gibberish from the Department of National Defence, or 10 pages of redacted spreadsheet from the Department of National Defence?
The difference is that the judge, in this case Chief Justice Allan Lutfy of the Federal Court of Canada, was the only reviewing authority, "independently of government" to see the unredacted versions of the documents.
If, as it happened, he did not see and did not in fact know of the existence of the transfer log up to early 2007, he made his determination of the Section 15 application on the basis of evidence withheld from him, intentionally or otherwise.
It looks like the Justice Department is doing something similar.
The following is Article 139 from the Criminal Code of Canada (emphasis added):
Obstructing justice
139. (1) Every one who wilfully attempts in any manner to obstruct, pervert or defeat the course of justice in a judicial proceeding,
(a) by indemnifying or agreeing to indemnify a surety, in any way and either in whole or in part, or
(b) where he is a surety, by accepting or agreeing to accept a fee or any form of indemnity whether in whole or in part from or in respect of a person who is released or is to be released from custody,
is guilty of
(c) an indictable offence and is liable to imprisonment for a term not exceeding two years, or
(d) an offence punishable on summary conviction.
Idem
(2) Every one who wilfully attempts in any manner other than a manner described in subsection (1) to obstruct, pervert or defeat the course of justice is guilty of an indictable offence and liable to imprisonment for a term not exceeding ten years.
Idem
(3) Without restricting the generality of subsection (2), every one shall be deemed wilfully to attempt to obstruct, pervert or defeat the course of justice who in a judicial proceeding, existing or proposed,
(a) dissuades or attempts to dissuade a person by threats, bribes or other corrupt means from giving evidence;
(b) influences or attempts to influence by threats, bribes or other corrupt means a person in his conduct as a juror; or
(c) accepts or obtains, agrees to accept or attempts to obtain a bribe or other corrupt consideration to abstain from giving evidence, or to do or to refrain from doing anything as a juror.
R.S., c. C-34, s. 127; R.S., c. 2(2nd Supp.), s. 3; 1972, c. 13, s. 8.
139. (1) Every one who wilfully attempts in any manner to obstruct, pervert or defeat the course of justice in a judicial proceeding,
(a) by indemnifying or agreeing to indemnify a surety, in any way and either in whole or in part, or
(b) where he is a surety, by accepting or agreeing to accept a fee or any form of indemnity whether in whole or in part from or in respect of a person who is released or is to be released from custody,
is guilty of
(c) an indictable offence and is liable to imprisonment for a term not exceeding two years, or
(d) an offence punishable on summary conviction.
Idem
(2) Every one who wilfully attempts in any manner other than a manner described in subsection (1) to obstruct, pervert or defeat the course of justice is guilty of an indictable offence and liable to imprisonment for a term not exceeding ten years.
Idem
(3) Without restricting the generality of subsection (2), every one shall be deemed wilfully to attempt to obstruct, pervert or defeat the course of justice who in a judicial proceeding, existing or proposed,
(a) dissuades or attempts to dissuade a person by threats, bribes or other corrupt means from giving evidence;
(b) influences or attempts to influence by threats, bribes or other corrupt means a person in his conduct as a juror; or
(c) accepts or obtains, agrees to accept or attempts to obtain a bribe or other corrupt consideration to abstain from giving evidence, or to do or to refrain from doing anything as a juror.
R.S., c. C-34, s. 127; R.S., c. 2(2nd Supp.), s. 3; 1972, c. 13, s. 8.