Oh the madness! There was black everywhere.
Surprisingly, despite the lengthy delivery estimate, it came very quickly within a few days and I wasted no time getting my blender back into action.
KitchenAid Blender Coupling 9704230 and a large flat screwdriver.
Finally! It took me about 10 minutes to get that thing off.
Good as new!
So that pretty much did it. I'm back to blending juice, life is good, and it's not giving me anymore problems. If you have any questions, feel free to ask, and happy blending!