I do remember when finishing that one I pressed "how" and it showed a section like that (without walls at the side) while there definitely were walls there.
Sam: "We're 98% certain General Skun-ka'pe is evil."
Stinky: "And the other 2%?"
Max: "That he's crazy and we have to shoot him! But that may be wishful thinking on our part."
(Any resemblance to KOTOR is purely coincidential, really!)