I have now done this twice!! 4 years apart - only solution is to wind on the spring - CAREFULLY!! Thankfully I managed it both times - last occasion of the break was exiting the Three Counties Showgrounds at Run for the Hills! I had to wait till I got home to get the spare spring to effect the repair but the car worked flawlessly until then which makes me think that the spring is to protect the clutch from the left foot pressing the pedal unconsciously rather than a necessary return spring for the clutch operation.
Anyhow all is well again!!
