Ive killed a gorgon, its not hard with a group of rocket launchers. When you do that, many more appear, they are faster/more aggressive, and close the chest doors in the maze. You also cant kill another because they are buffed.
Getting the relic into the maze might produce some very interesting results. Can you take the spirit bloom shortcut before the templar is dead?
It doesn't spawn more as far as I can tell. It seems like when one dies no others appear in it's place a youtuber (Ben Broman I believe) encountered a glitch during a strem that caused all but 2 of his fire team members to become invulnerable to the "Gorgon's Gaze". They killed quite a few before moving on, and they searched the whole maze to no avail.