Remove reusable block embedded in several hundred posts

This may be an obvious question, but if I wanted to remove a block that is added to several hundred posts, can I just delete the block? Or is there a way to pull the reference out of the posts programmatically?

I tried setting one to “Private” which accomplished this, but sort of broke the block as there was no UI to change it back to Public/Publish again, and it simply vanished from the Blocks admin list, so I had to change the post_status back to ‘publish’ via the database.

I guess a future enhancement may be to add an active/inactive toggle to these, to keep them around, but shut them off.