I think my question is related to this answer:

We have a new Omni-Glide we love. Unfortunately, where we intend to store it does not have an electrical outlet. There is one in the next cabinet over. I’d rather not have to cut a larger hole to accommodate the plug (American) nor the wall mount. It looks like the cord itself should come out of the wall mount allowing me to cut a much smaller hole. But for the life of me I cannot seem to free it. It looks like a small flat head screw driver should free it, but no luck.