I there a chance to retrieve Textual Inversions (in my case "Cianna Lynn") pulled from the site?
That specific model was returned to drafts due to the sample images violating the ToS on lewd pics of real-world people. The uploader is welcome to appeal, and the model will be reinstated if the images are changed to comply with the rules. It's really up to the uploader whether they decide to fix their content and apply to re-post.
You could also contact the creator directly and see if it's available via other means.