This is likely another scam/lie to manipulate the market. No evidence at all. Converting your bitcoin to USD will drive the price down.
Unless this person can show who they are and evidence of a lawsuit, you would be wise to ignore this user and his posts.
Agreed. The claim that the attorney told him to sell bitcoin for cash so that the suit would go forward easier makes no sense at all. The author should provide a link to the petition that was filed with the court when filed.
Also, simply state the name of the law firm handling the case.