Hmmmm..... I would be inclined to undue the 2 wire harnesses closest to the passenger and see if that helps you lift up the cluster enough to get the one by the driver's side off.
That said, if you look at the following picture
https://cdn4.pelicanparts.com/techarticles/Boxster_Tech/86-ELEC-Ignition_Switch/images_small/Pic3.jpg
You'll notice in "B" and "D" that you not only need to take out the cluster but also the steering wheel and housing to just get at the pin and bolt
easily. This is simply too much work for something I can reach from underneath with a little blind feeling around and a little bent screwdriver or small Allen key. The bolt has a nut on the bottom which is easy to reach and take off from underneath. It's really only the pin that will give you grief.
As such, my advice is to attempt to reach it from underneath and not bother with your cluster.
Good luck my friend.