The clutch on my KA : Can it 'get better'?

Hello. Last week my Ford KA developed clutch judder which seemed quite severe but drivable. I have since booked it into service for the clutch to be replaced but miraculously, the judder seems to have almost disappeared (Still VERY slight). So the question is this. Should I bother forking out 550 quid for a new clutch when it actually seems much better? Why should it be severe one week and OK the next? Answers before Tuesday 3rd please!!