Your ellipsis distorts substantively what I said. Which I've come to expect from you, Snark.
Lincoln's rep was rescued by his untimely and illegal demise. In that sense, Booth's crime rescued Lincoln's reputation from Lincoln's next series of crimes, which included the transportation of, and probably megadeaths among, the slaves he had so recently ordered emancipated.
Now that's enough of that.
That is a far cry from being "heaven-sent." Thank you for clarifying your position. I disagree with your supposition regards "megadeaths," but the issue is purely hypothetical.