Hi.
As this too, is headline or title of an article,
I'd be as succinct as possible. The "官" in "官は",
of course, refers to whoever the public officials are
who are making this demand. If you have the entire
article in front of you, then you already know exactly
whom is referred to by "官". If not, personally, I'd probably
start my headline/title with something like
"Officialdom: 'Close the door...!' "

I wonder if the "officials" happen to be the governors
of the various prefectures who met in Tokyo on Monday,
the 18th, and issued a proclamation about this
particular scandal-of-the-month. Your article
was also published on the 18th, I noticed, and is about
this same problem.
Please see below link. It lists many articles covering this topic.
If you scroll down to "最近の関連する雑誌見出し", you can
find your article. And the Kyodo News article at the very
top of the page reports on that governors meeting and their
proclamation.

Anyway, "Close the door on public waste!" is how'd I'd
envision "「出口」から閉めよ" showing up in an English
headline or title.
HTH!
Joe

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Note added at 15 hrs (2006-12-20 09:25:42 GMT)
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I suppose it helps if I post the link I
mentioned...
http://www.excite.co.jp/News/politics/20061218200425/Kyodo_2...