Welcome Stealthxcat:
Yes, the ball nut is a seperate piece that should screw off. Use a box-end wrench on the nut, support the pipe while pushing the wrench to the wall on the left side. If you have a small propane torch, you could add some heat to the nut, being careful not to get it too hot and mar the chrome. Pipe wrenches and groove joint pliers will chew up the chrome plating and make a mess.
Please post back and let us know how it turns out.
Glenn
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