If I were going to start over from scratch, I would do the following:
- exclude each device from the existing network
- in HABmin, delete each zwave thing, including the controller
- shutdown openHAB
- delete any remaining node.xml files
- factory reset each device
- factory reset the stick
- start openHAB
- add the stick
- include devices
There’s a chance I might’ve missed something, but the above seems pretty thorough.