Undo Blocklist for a LOT of subs

I accidentally blocklisted over 9700 subscribers. Brevo support told me to unblock them ONE BY ONE which is impossible. Can I delete them completely and re-subscribe them since they did not ask to be blocklisted and I did it by mistake? What is the quickest and easiest way to accomplish this?

@craftygal yes, you can delete these contacts if you wish, and then import them again