@ginnyjm I don't have experience with the Minuteman device, but you may be interested in this discussion about it. Perhaps you may wish to ask your question there. As I understand it, this device is screwed onto the outside of the spine, correct? It sounds like removing it would be possible, but you would also be cutting through muscles in the back to get there. That is a question to ask a spine surgeon.

Spine Health - "Anyone had a interspinous process device (Minuteman) fusion procedure?"
https://connect.mayoclinic.org/discussion/minuteman-fusion-procedure/