Compulsion gets half of us stuck in curry (6)
I believe the answer is:
Here is my best explanation:
'compulsion' is the definition.
'half of us stuck in curry' is the subsidiary indication.
'half of' indicates taking half.
'stuck in' is an insertion indicator.
'curry' becomes 'dress' ('dress' can be a synonym of 'curry').
'us' cut in half is 'u'.
'u' put within 'dress' is 'duress'.
'gets' is the link.
(Other definitions for duress that I've seen before include "Excessive pressure", "The use of force or threats to get one's way", "Force, coercion", "(Under) constraint", "Threats, violence, etc, used in coercion", "Use of force or threats to get something", "Hardship", "Coercion, pressure", "Compulsory force or threat" and "Constraint, force".)