Today I tried it again, except after killing the boss the real sulu just became a blue character that couldn't be attacked or anything, and couldn't be interacted with either. He just started running someplace and then all the Undine dropped from above, and we all died trying to find him and talk to him. Now none of the sulu's take any damage and we can't progress anymore.

Unless you have the Godmode bug like I had earlier today. None said ARRGH, none got a lick of damage to them...Yea...nothing say FIX THIS MISSION like having to do the segment all over again....