Sure, then blackmail is also just a verbal agreement between two private citizens. But on another note, Trump is still fantasizing that he won 2020. So my ques

Sure, then blackmail is also just a verbal agreement between two private citizens. But on another note, Trump is still fantasizing that he won 2020. So my question is, what would have been the recourse if Pence went along with the fake elector scheme. How would Trump have been removed from office?