Disorderly orderly's place of work perhaps (2,1,4)

I believe the answer is:

in a mess

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'disorderly' is the definition.
(I've seen this in another clue)

I cannot understand how the remainder of the clue works.

(Other definitions for in a mess that I've seen before include "Tucker here for Tommy" , "at sixes and sevens" .)

I've seen this clue in The Globe and Mail.

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