I don't think that last scenario would help Jimmy in preventing him from being disbarred. If anything, it might get Chuck disbarred, too, since the Bar is not big on lawyers being involved in such shenanigans, but Jimmy's end goal is not to take Chuck down with him; it's to do whatever he can to keep his license to practice law.
Given Gilligan's history with BB, I am sure whatever happens will be something none of us see coming, will be awesome, and will make us all think, "Wow, that seemed so obvious and natural."