Just cutting that plastic off flush with his shoulders gives you complete and dare I say - normal - head articulation.
Much cleaner look from behind as well.
Cutting off the extra height does not affect the transformation. He still functions normally. The only thing you'll notice afterwards is that you can now see his head in alt mode when looking underneath. For me, that wasn't a big problem.
And I just like this pic... cuz of how the flash interacted with the "electrowhip".
Tools: Dremel, Hobby Knife. Optional - fine grit sandpaper.
Directions for the mod are simple. Take a dremel, use a cut-off wheel, start from the back of the figure. You can see at what height I made my cut in the pictures. I found it best to operate my dremel on a speed of about 3 or 4, it's enough to cut the plastic without melting it and making a bigger mess. Once you've worked your way through that plastic, remove the piece. You may need to finish it off with the hobby knife, as some of the plastic melts back together a tiny bit. Once off, clean the area up with the hobby knife, removing unwanted burs and scrap. Additionally, you can take some fine grit sand paper and rub the area lightly to round off the edges and remove any rough spots.
*Edit* I had forgotten a step. It may not be mandatory, but I personally recommend removing the entire gray piece that makes up the back and what the "horn" attaches to. Simple step - take a small phillips head screw driver and take the three screws out seen in picture 3. Pop the back piece off. This allows you to get a cleaner cut without fighting all the other pieces of the figure. Mod can probably be done without disassembly, but it's just easier this way and you don't accidently lop off his head.
