Hi Eve,
thank you for sharing!
Be careful, abruptness doesn't necessarily mean repair phase, but that there was a point of change happening (directly) before. This can also be a stressor, in case of the ((Musculoskeletal - System Overview|musculoskeletal system)) often a special strain. In this case, I would see this as probably being the result of a successive weakening of the lumbar spine (((Musculoskeletal - Skeletal Muscles|muscles)), ((Musculoskeletal - Cartilage|discs))) and then a certain movement or burden triggered the pain, which was the abrupt change? If it is consistently present (more when you move) your body wants you to take away all strain in order to be able to repair (and you might have your discs looked at to know whether there is a damage like a prolaps). When water takes your weight, how is it then?
Because you had that earlier in life, the whole conflict theme isn't new to you but perhaps a part of your personality? I'd ask about how you embody the functions of the spine: elasticity, buffering, uprightness, and which of these you haven't felt successful at?

With the swollen joint in the left finger, does that feel rather warm? Then it might be an inflammation which would mean a repair phase. The swelling would make that you can't bend it normally. So you worked a lot with that finger, and as fingers are about skills (megalomania only in constellation), how did that work go for you? Could you solve a problem? What thoughts and feelings did you have around that work? (In this case, the "mother/child" relation would probably not apply, because of the direct connection to the computer work the symptom appeared after.)

Remember that the META-meanings in the wiki are examples that may or may not apply to your special association with your spine or joint. They are to give us an idea about what to make of the general theme. What thought feels inspiring for your spine to straighten safely? And for your finger to feel and do?