Go back to Earth and detonate. It will mean the end of the civilization they know, but the Superhappys will still hunt the survivors down with 2^2^2^2 ships, and will force an equitable compromise for each surviving pocket of humanity, each of which will make the whole more human then they would be with just one compromise with humanity.

I just can't figure out who the Confessor will shoot, or if he will just threaten, to make it happen. And I want to read both endings.