Consulate Docks quest repeatable?

Can I do this quest again? Was trying to do the bonus and I guess I went the wrong way as it completed without getting the third guy.

Yes, you can re-try all missions in any of the 4 campaigns, including Consulate Docks. Just go back to that outpost and talk to the same NPC that you did before, to start the mission.

Cool! It's taken me to a whole other place, so I haven't been back to see if I could, but I"m sure I'll get there someday!

It is a matter of traveling there through the map. If having trouble to find it, use this fully explored map as a reference. http://wiki.guildwars.com/images/c/ca/Elona_map.jpg

The consolate docks mission outpost is to the bottom left on the island.