Rich :If the Plastic Insert is still in the Ss braid It cuts easily with a hacksaw. OIf you hachsaw off the fittings the Plastic pipe will slid out. Once the plastic pipe is out, if you want to cut the braid I used a large pair of Scissors. I may have ruined the scissors.
If you go to the All grain threads and scroll down to the April 16 Thread "Mashtun Manifold: Copper vs Pvc" Page 3 & 4 has a detailed writeup & pictures for SS braided manifolds.