We even have a full-blown posting that goes into ways to delist on OpenSea, in case you are interested. Any vulnerability on the System can turn into a possibility for destructive actors and spell disaster for unsuspecting buyers. Infographic describing why you should know the way to list NFT on https://nft-on-opensea62514.theisblog.com/18603246/nft-on-opensea-things-to-know-before-you-buy