Video is still there: https://www.youtube.com/watch?v=f4WbKnE-9PQ
He’ll get a follower who is an attorney to write a cease and desist letter to Silvio and company and will base his crowdfund campaign on that so it will look authentic.
I don't think a C&D letter would amount to anything, though I suppose it depends on the defamation laws in Croatia or the UK/USA (I'm not sure where Kim lives, I assume it is the UK).
I think that, in order to prove defamation in the USA (just as an example), Evans would need to demonstrate that Silvio made public statements that she knew were false, with the intent to injure Evans (his reputation, not physical injury). In other words, that she knowingly lied with malicious intent. (Also, I'm putting aside any considerations for a person who has a high public profile, as the law here treats them differently with regards to defamation.)
In this case, if he told her about something he had done, and she repeated it in public, it's difficult to see where he has a case. And if all she did was say "he told me that he did this" then he has no case at all, seeing as he already admitted that he did tell her what he did. And that does seem to be the case here. Which, again, is why I found his comments about legal representation to be confusing. Well... I mean, I know why he would use the term...