Once a set of NFT's or ERC20s are wrapped in a minted wNFT, if the wNFT is not attached to a loan request or loan, you can (from My Wallet) retrieve the collateral and burn the wNFT itself.
To do so, navigate to My Wallet, hover over the wNFT, which should have 3 Medici Balls on the button right of the card. Click anywhere on the image shown in the card and you should be prompted with the following modal.
Click Unwrap collateral and you should be prompted with another modal to confirm your transaction. You will need to have Eth in your wallet as unwrapping is a gas incurring transaction. After the transaction is confirmed, you should see the NFT's that were once in the wNFT, in your wallet again, individually.
Updated about 23 hours ago