Defiant exclamation, moving those about (2,5)
I believe the answer is:
so there
'defiant exclamation moving' is the definition.
I know nothing about this answer so I cannot tell whether this works.
'those about' is the wordplay.
I cannot quite understand how this works, but
an anagram of 'those' is 'sothe' which is located in the answer.
'about' could be 're' ('re' means regarding or about) and 're' is found within the answer.
No letters remain.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for so there that I've seen before include "defiant expression" , "Expression of defiance" , "Triumphant put-down" , "I defy you" , "What are you going to do about that" .)