Defiant remark, angry about article (2,5)
I believe the answer is:
so there
'defiant remark' is the definition.
(I've seen this before)
'angry about article' is the wordplay.
'angry' becomes 'sore' (similar in meaning).
'about' is an insertion indicator.
'article' becomes 'the' (the definite article).
'sore' going around 'the' is 'SO THERE'.
(Other definitions for so there that I've seen before include "defiant expression" , "Triumphant put-down" , "Expression of triumph, derision, etc" , "Derisive expression" , "Defiant statement" .)