Before closing things up, I took some pictures. I couldn't see how the wiring could be fed out before removing the door.
The door switch socket has wires coming through a rubber grommet that lead to the exit to the pillar - I didn't try, but doubt the socket would pass through the grommet's opening. There is also another cable coming through a different small opening from the door lock. Unless there is some way of disconnecting that at lock end, it would need to be cut or the socket disassembled.
On other side, I rewired the door due to a short in the pillar. There I cut the wires at base of pillar and in door, so didn't run into this.
Anyway, I got job done without removing door, so all is good
Some pictures (For my future reference
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