Immediately in an awkward predicament (2,3,4)
I believe the answer is:
on the spot
I believe this clue is a double definition.
'immediately' is the first definition.
(thesaurus)
'in an awkward predicament' is the second definition.
(I've seen this before)
(Other definitions for on the spot that I've seen before include "Like a shot" , "Where cream may go" , "without delay" , "Under pressure" , "In difficulties" .)