Step 1 - (Optional) Log into your VPS/server, shut down the daemon, and shut down your VPS/server
sudo systemctl stop zelcashzelcashd stopsudo shutdown -h now
Step 2 - With your full node wallet closed, navigate to the zelnode.conf file
Step 3 - Find the ZelNode you wish to shut down and put a hash character in front of the entire line
Step 4 - Open your full node wallet and allow the wallet to fully sync.
Step 5 - Your collateral should now show as spendable in your wallet.