LightWalker, it was actually really simple.
First, put the tips of a pair of needle-nose pliers into these to holes in the tailcap and break the thread. Once it's broken free, I just stuck a mechanical pencil tip into one of the holes and spun it off. That was a lot easier than using the pliers the entire time.
Then, take a thin razor blade or precision screwdriver and pry these two tabs. There's a set on either side of it, so you may need to pry the tabs on both sides. Once you clear those little retainer hooks, you can just lift the cover off. Be careful taking it apart, because there are a few small parts inside.
Inside of the top cover is the clicky switch. It works pretty much exactly like the a clicky pen. I didn't think to take before pictures, so you'll just have to see what it looks like if you take yours apart. The clicky part is in two pieces. You'll need to separate them to do the mod. The larger piece that actually touches the rubber of the switch should be set aside. You won't need to mess with it. The other piece that slips inside the larger one is what you'll need to change. There are 4 tabs around the circumference of the part. These need to go away. I just, very carefully, shaved them off with my knife. A razor blade would probably be ideal.
Once you do that, it's time to put it back together. Put everything back in the way it came out. You'll have to make sure, before you clip the cover back on to the switches circuit, that the clicky's stem is protruding like in my second picture. It is possible to put it back together with it flush with the cover. This will still allow it to work, just not very well or reliably. Once the switch is resembled, put it all back into the tail cap. Here's a picture of the order, in case you mix them up.
Let me know if any of that didn't make since!