Deputy back in order (6-2-7)

I believe the answer is:

second-in-command

'deputy' is the definition.
(I know that deputy can be written as second-in-command)

'back in order' is the wordplay.
'back' becomes 'second' (both can mean to support an idea or proposal).
'order' becomes 'command' (commanding is a kind of ordering).
'second'+'in'+'command'='SECOND-IN-COMMAND'

(Other definitions for second-in-command that I've seen before include "Officer immediately below chief officer" , "Deputy" .)

I've seen this clue in The Independent.

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