There are many ways to form an LLC without ever revealing the controlling members. For example, there is a large cottage industry in Wyoming whose entire existence is to form LLCs for a person/persons who do not ever want to be associated with the LLC but still have full control. This is done through these "agents" who, for a fee, stand in for the unnamed Member. Many of these "agents" are law firms. It has long been a way of hiding assets and or income from spouses or govt eyes by registering the asset in the name of the LLC via the Agent. Think yachts, aircraft, bank accounts, etc. being owned by these shell LLCs.

In most cases, the real LLC Managing Member never signs a single official document anywhere, except on the representation contract which is kept in the private and personal files of the "Agent". Knowing this, I doubt the Barrs would have ever attached their name to such an organization for the purposes of receiving a payoff if same could be achieved without ever disclosing the relationship. Additionally, a TRUSTED attorney hired by Barr could have provided enough shielding to never publicly tie the Barr name to any traceable entity. IMO the Barr/LLC relationship is bogus or fake news or maybe blatant enough to be a frame. More deep digging is need to verify the story. Most large deposits like that cannot be withdrawn so quickly on a new account without triggering a "know your customer" internal flag.