Hi loanrangie,
I did contemplate re-soldering the pin and putting it back, then I remembered the situations that this spot of solder had landed me in and where the spider actually is and how inaccessible it is, I decided that the bypass was the safest way out of this. Next time I might be in a bit more of a predicament where I do need to move the vehicle with a certain amount of urgency.
Just a choice thing I suppose, the general advice of others on this forum and others was to simply install the bypass. The vehicle is now rebuilt and performing faultlessly.
Getting the spider out and back in again is four hours of my life I will never get back. Thanks for the comments.

