Our Founding Fathers risked death and financial ruin for their families if the revolution failed. They would have gone down in history as dirty traitors to a glorious king, if they failed. Our Founding Fathers took the risk because they had principles.
Dershowitz has blown a moderately loud whistle here.
Acting to some extent consistent with his personal style, thus retaining credibility.
He didn’t need to do so (not under duress, no pending charges against him).
This Guy chooses to give him credit.