I also remember a comment, iirc by JMS (Jan help?), that Paul Winfield made some disparaging remarks about the Babylon 5 crew being "unprofessional" compared with the folks at Trek.
I can't find anything in the archives or in the Jane Killick books. In the Other Voices script book for the episode, Larry DiTillio comments that Winfield had some problems with the long speaches and that they had to be cut down and that there was kind of a circus atmosphere when shooting that episode with so many extras.
At the risk of sounding maudlin... I regret never having heard Andreas Katsulas on a commentary.
Agreed completely. I'm completely in agreement with why he didn't (WB wouldn't pay him) but I'd very much have liked to get his insights into his character.