You can spray and cycle without removing the whole mechanism from the hatch. Just lift the hatch and use a tool to push the mechanism inward to engage and press the key fob or hatch button to release, while spraying.
DIY removal is easy! You'll need a philips and flat screwdriver, a 13mm box wrench or socket, a T30 torx, and a plastic pry tool for the trim panels.
First, remove the rear hatch wiper arm. Pry off the circular cover on the base of the wiper arm with the flat screwdriver. You will see a 13mm nut. Remove this, then wiggle the entire wiper arm off.
Next, lift the hatch. Gently pry off the 2 interior lights in the lower hatch trim trim panel and disconnect them.
You will see a philip screw in each light well, and a philip screw in each inner grab handle (4 total) on the lower hatch trim panel. Remove these.
Next, pry up on an edge of the lower hatch panel and pull outwards. The plastic rivets will start popping out and the lower hatch panel will start separating from the hatch.
At the left and right the lower hatch panel mates with the pillar panels. Pry the pillar panel straight up and away from the lower hatch panel to unclip it.
Move the emergency hatch release cable into its hole in the trim panel and the lower hatch panel will come fully free and you can set it aside.
Next remove the rear wiper mechanism. Unplug the harness and remove 4 torx bolts, then pull out and set aside.
Next remove the soft close latch. Unplug harness and and remove three torx screws and pull out. You will also need to pry out the emergency release cable that is clipped on to the latch assy.
That's it.