Well, I have removed the rear shock. I know in the service manual it says to remove the adjuster from the tunnel, but you have to remove the adjuster from the shock anyways to get it out.
I just undo the cable from the adjuster to the shock (same setup and a cable speedo drive) then pull the 2 bolts.
Putting it back in, you have to compress the spring some, I lay a thick towel around the W arm, and using a crow bar, I compress the spring about 1/2Inch, then drive the bolt home.
I had to take it out to adjust the C clip on the outside of the shock. The stock setting was going to be to soft for my riding and 260lbs. Moving the adjuster made a bid difference in pre-load. The grooves are about .500" apart.