What can young divorce lawyers learn from the Sherefsky Aronson Mayefsky & Sloan divorce?

The New York Times reported a few days ago that NYC matrimonial law firm Sherefsky Aronson Mayefsky & Sloan have split, aka, got a divorce; aka, dissolved their partnership….what lessons can be gleaned from this acrimonious divorce?
According to the Times article, the firm handled a number of high profile cases in New York including the Peter Cook (Christie Brinkley’s husband) case, and the Trisha Walsh Smith case. (They represented the husband.)
The partners used to take posh holidays together in places like Hawaii and Puerto Rico. But they had a falling out because one of the partners, Mr. Sheresky, 82, isn’t pulling his weight anymore. So, in a huff, Mr. Sherefsky asked for a divorce and he’s suing for a $26 million equitable distribution package from his former spouses, Aronson, Mayefsky and Sloan.
He claims he was the “key to the reputation” of the firm of being a top divorce/matrionial niche practice in New York City. He “corralled” the whole thing, according to how the Times reporter put it. And it seems the partners are in agreement about that. But they are not in agreement about him continuing to get a dime out of profits when he’s 82 and not contributing anything to the firm the way he used to when he was a young whipper snapper rain maker.
What is disconcerting, is that it appears that these experienced professionals did not have a written agreement as to how profits and shares would be divided and for how long. The Times article does not come out and say that, but it’s almost implied. Can that be true? I am flummoxed if it is true. It’s crazy. Why would people on this level do business on the level they were doing business, on a hand-shake? I am bewildered.
If, in fact, there was no written agreement, then I think the first lesson for young lawyers is: GET IT IN WRITING.
But the second lesson I think I would take away from this, certainly if I were to sympathize with the 82 year old Sheresky, is: TRUST NO FRIEND.
I think each partner in that firm needs to insist on everything being put in writing. Because today was Sheresky’s day that the chickens came home to roost. Tomorrow, it will somebody else’s.