Rotten policy, unconnected (3-4)
I believe the answer is:
off line
'unconnected' is the definition.
(similar in meaning)
'rotten policy' is the wordplay.
'rotten' becomes 'off' (rotten food is 'off').
'policy' becomes 'line' (I've seen this in another clue).
'off'+'line'='OFF-LINE'
(Other definitions for off line that I've seen before include "Not connected to the internet" , "electronically disconnected" .)