The 2 silver neck rods turned out to be removable by pulling out. The trick is to get the rod out enough to grab it. I used a small flat head screw driver to lift it out a bit, then grabbed it with a pair of pliers.
Also, the 2 black plastic levers turned out to be holders for the IR circuitry board, which I realized by looking at the ifixit pictures on line.
My problem is solved.
Note: There is a potentiometer which tells the program which way the head is pointing. The potentiometer rotates 360 degrees, so there are 2 ways to connect the head to the potentiometer, each 180 degrees apart.
Apparently it matters which way you connect it, so if in reassembling the head to the body the pony head acts funny, just remove and re-connect after rotating the potentiometer 180 degrees.