getbalance should now show all channel balances as 0. Once your ETH/ERC20 channel balances are available as Wallet Balance (Not Tradable), you can import your seed/private key into a wallet like metamask. To do this, run the following command and follow the instructions:
getethmnemonic
Once your BTC and LTC channel balances are available as Wallet Balance (Not Tradable), run:
One more check that all balances are indeed 0 with getbalance and you can safely down and delete your environment.