What Happened Between Jim Garrison And Clay Shaw At That Dinner At Brennan's Restaurant?

Sometime shortly before or after (accounts differ) the arrest of Clay Shaw on March 1, 1967, Clay Shaw was dining with several men at Brennan's  restaurant in New Orleans. Nearby was Jim Garrison, District Attorney of New Orleans, seated with his wife and another couple. According to legend, Jim Garrison and his wife got into a verbal spat and through their drinks on each other, or at least Jim Garrison threw his drink onto his wife.

As I related in my biography of Clay Shaw, Man of a Million Fragments: The True Story of Clay Shaw, there are at least several versions of what happened next. Some accounts have Clay Shaw's table, along with anyone nearby, becoming aware of the incident, but without any interaction between the two tables (which supposedly were not actually next to each other). Other accounts have Clay Shaw getting up from his table and approaching Garrison's table, then verbally lashing Jim Garrison for abusing his wife. Still other accounts have Jim Garrison saying something to the effect of: "I'm going to get that SOB!" Still other accounts have two incidents, one the drink-throwing incident between Jim Garrison and his wife, and the other having Jim Garrison's verbal threat to get Shaw.

Over the years, some have attributed Jim Garrison's long attempts to prosecute Clay Shaw to this incident. I have my own opinion, but will we ever know the full truth?

I have spoken to at least one person who claims to have been present at the incident. Are there any others out there?