Episode 56: Severed Dreams (Season 3, Episode 10)
Synopsis: In which everything hits the fan.
Other Hugo nominees in 1997 for “Best Dramatic Presentation” were Star Trek: First Contact, DS9 “Trials and Tribble-ations,” Mars Attacks and Independence Day.
Max was particularly vocal this episode. Enjoy his dulcet tones.
Robert Foxworth’s treason is discussed by JMS in length on the Lurker’s Guide page, linked above.