In an awkward predicament immediately (2,3,4)
I believe the answer is:
on the spot
I believe this clue is a double definition.
'in an awkward predicament' is the first definition.
(I've seen this before)
'immediately' is the second definition.
(thesaurus)
(Other definitions for on the spot that I've seen before include "At a particular place of action" , "In difficulties" , "Colour is replaced here" , "replacing ball from pocket here?" , "In a difficult situation?" .)