You can apparently end the cybergrind by walking into the wall blocking you from escaping. The enemies will despawn and a message stating that the cybergrind has ended appears. Howerver: the wall and wave/enemies counter does not disappear until the player rejoins the world/server. (I have first noticed this bug on a server, and haven't yet tested it on a singleplayer world.)
The "/ultracraft debug cybergrind end" command does nothing.
You can apparently end the cybergrind by walking into the wall blocking you from escaping. The enemies will despawn and a message stating that the cybergrind has ended appears. Howerver: the wall and wave/enemies counter does not disappear until the player rejoins the world/server. (I have first noticed this bug on a server, and haven't yet tested it on a singleplayer world.) The "/ultracraft debug cybergrind end" command does nothing.