Yeah, I think I'm going to just go back and redo everything. Bugger. I checked a FAQ and found out that he was supposed to self-destruct. That would've been my problem, he didn't self-destruct. He just stood there taking all of damage, but not dying, so I just left. That better not happen again.
I'm on Telos and I just discovered that I didn't get the Vocabulator off of HK-50. Is there more than one, or am I basically screwed at this point and either have to load an old save or go on without him?