The entrapment angle is solid, I think that's it.
I also think Mike figured out where the real tape is and they can now go get it if necesscary, so Chuck doesn't have a case. Jimmy asked Mike about the "other thing" that Chuck had in his calendar at the restaraunt.
Is Jimmy, Chuck's legal guardian still? Wasn't the hospital trying to have him commit him in season 1 or 2? Perhaps he'll have Chuck disbarred and committed as a part of this. Seems too harsh, but he basically told Chuck he was on his own last episode.