This was the closest one: https://kb.vmware.com/s/article/2150567
in this case the disk can be removed manually as follows:
Verify the disk appears: (Was showing as Device: Uknown and had matching UUID)
esxcli vsan storage list
Remove the disk:
esxcli vsan storage remove --uuid xxxxxxxxxxxxxxxxxxxxx
and the verify its removed with:
esxcli vsan storage list
Above process worked fine and solved the issue