His defense looks like its been a train wreck.
The charges against Flynn were very weak, and could have been defended at trial with a good chance of success.
But Flynn wanted to protect his son from legal jeopardy, something which seems to have been lost in all this.
People object to this “extortion” and understandably so, but that is the system we have until people demand change, and they will never demand change because they are too busy cheer-leading when “extortion” is used against the bad guys.