See, let me tell you what you did wrong here. What I am guessing here is that you allow guest posts on your websites that are draining your juice, which you are now referring to as Spam. And you have deleted it via your CMS directly. What was supposed to be done here is that you should have first used GSC to disinfect each of them and then deleted them. And still, you do not need to worry; it is a matter of days, but it will get deindexed. But yes te repution damage is real