As the system is now, I believe you can edit until the post is archived. After that, it's permanent.
I suspect even if you could mark a post as deleted, it couldn't really ever be. The reason? That's the way a blockchain is designed. When you make an edit, you are really making another corrected post and the old post data is still in the blockchain.
I hear you man, it's all good. I was just saying. Thanks for the input though!