Put in situation hard to get out of? Possibly, providing one red's OK (9)
I believe the answer is:
snookered
'put in situation hard to get out of?' is the definition.
I can't judge whether this definition defines the answer.
'possibly providing one red's ok' is the wordplay.
'possibly providing' indicates an anagram.
'one'+'reds'+'ok'='oneredsok'
'oneredsok' anagrammed gives 'SNOOKERED'.
Can you help me to learn more?
(Other definitions for snookered that I've seen before include "Thwarted" , "blocked" , "Put in difficult position" .)