Here's my take, an d excuse me for not reading all the replies, BUT you did say the lawyer is going to sue the estate. Well if you already have settled the estate, you will be suing yourself and anyone else who got any money. Any if the lawyer wins, then you will end up paying hiom out of what you already gained from the estate and have even less.
Great plan for the lawyer, I hope he gets you for his third, if he is smart, he already knows how much is in the estate, and will sure for well over 3 times the amount. If he wins, you will end up owing him more than you already got!