Bear with me as I talk through your directions....If i am looking at the fuel rail as it is attached to the lower intake manifold I see 2 main sections, imagine x axis front and back. They are connected permanately by a section on the left hand side, y axis. On the right hand side there is a return line, fuel pressure regulator (connected to front rail) and in back the feed line with an odd bolt that screws into the fuel rail. If I loosen that bolt isn't there a way to remove that feed line?
If I picture the way you describe i follow that Feed line down along the block but eventually I hit a plastic sleeved section.
Apparently I am lost.