Awkwardly positioned in corner before getting put in empty shed (9)
I believe the answer is:
snookered
'awkwardly positioned in corner before' is the definition.
I can't tell whether this definition defines the answer.
'getting put in empty shed' is the wordplay.
'getting' is an insertion indicator.
'put in' becomes 'enter' (I've seen this in another clue).
'empty' suggests removing the centre.
'shed' becomes 'snooked' (I can't explain this - if you can you should give a lot more credence to this answer).
'enter' with its centre removed is 'er'.
'er' going into 'snooked' is 'SNOOKERED'.
Can you help me to learn more?
(Other definitions for snookered that I've seen before include "Thwarted" , "blocked" , "Put in difficult position" .)