[Ziggurat]

I never did any T'rang quests, they became hostile after I did an Umpani quest first. I thought if I rescued these guys the Z'Ant would lighten up but no luck. Am I stuck with these unwanted companions (I already have a ninja and lord in my party of four)? I have to keep Guardian Angel on them at all times in Ascensiion Peak battles. It really slows down fights and makes me more vulnerable to Death Cloud, Quicksand, etc. Do I need Vi before the end of the game? Should I go to Raygin and drown them (and can I dismiss dead guys, anyway)? If I have to keep them and can still finish the game, so be it.