[V8] Repairing door wiring?

[NIck Miller]

So, I have finally found a couple buggy wires in my Drivers door that could
have been causing some of my window issues, one of them is a brown w/white
stripe wire, the other is solid brown..

But, either way, they are both cut but not through, just the shielding, and
I need to repair them.  Curious how people go about this?  It looks to me as
the only way to get any room is to remove the inner door shell and lift it
out so you can get at all the wires.  Btw, one of them is cut in the
accordion area, the other is inside the door a slight bit.

Any tips on how I would do this?  it seems a bit tricky, at best.