Opposing Counsel Lied About Representing Their Client.

My in-laws are going through a divorce in the state of California.

My father-in-law is abusive, has been abusing substances, engaging in extramarital affairs, disappears for the weekend (sometimes into the work week calling out sick) on drug and alcohol binges. He has also ran up an excessive amount of debts on a hair transplant, new car and a boat.

My mother-in-law has retained a divorce attorney and filed for divorce nearly 2 months ago.

My father-in-law has actively avoided answering the door for the process server and has called in sick to work to avoid being served there as well. My father-in-law works for the city as a public servant. The paperwork was given over to the Sheriffs Department to have them serve my father-in-law at work. Somehow my father-in-law found this out and screamed at my mother-in-law at their home before storming off.

Less than an hour later an attorney that is licensed to practice in their state contacted my mother-in-laws attorney stating that they represented my father-in-law. Father-in-laws attorney scheduled a meeting 4 days later. This attorney is a business partner of my father-in-laws mistress. Supposedly they wish to marry except my mother-in-law is "in the way".

Two days before this meeting my father-in-law had most of the homes contents removed by hiring a moving company. Everything was taken to a nearby storage facility. My father-in-law also said he would no longer pay his portion of the mortgage and left. The next day the attorney representing my father-in-law called my mother-in-laws attorney telling them they never actually represented my father-in-law and cancelled the meeting.

What ethics violations does this fall under?