If it were me, I would...
Jack up the rear end high enough to provide full droop of the rear suspension.
Set the frame on jack-stands.
Remove the tires.
Remove the lower shock mounts.
(Being able to lift & lower the axle with a floor jack makes getting the lower shock mounts off much easier.)
Apply some downward pressure (Brittany, here's where you help) on the top of the axle & the spring should come out with a little pull.
Reverse process to install.
I've never found it necessary to disassemble the sway bar or any of the other suspension components other than the lower shock mounts.
But I haven't tried to install a 2" spacer without all the disassembly you mentioned earlier.
However, I have done this install with a 1" spacer, & disco'd nothing more than the lower shock mounts.