i went nuts earlier in the game and kind of eradicated all the mook in the arnika mook base..

this was before i was supposed to get the treaty letter from them.
i didn't think about it when i did it, and now that i've rescued the loudmouth glumph, i can't get in to see the umpani general to continue with my doublecrossing alliance thing.

is there any way to save this so i can complete the double alliance?

Go talk to the sergeant in the camp that you first talked with to get hired by the Umpani, if you have Glumph with you he should give you top level security clearance.

With that I could get in to talk with Yamir.