Right. Let me state right now, this was a misunderstanding.
From how I understood it, Alla was watching the Junkers fight some Lane Hackers when suddenly a Tridente came along. The Tridente, and according to him, a Salvager fired at him for about ten seconds before stopping and switching targets. Thinking they had engaged in hostilities, Alla fired back. Things went sour, and the Junkers blew up.
So, both side made some minor errors that ended up with a big uh-oh.
First, apparently, the Junkers thought the SCRA was actively assisting the Lane Hackers, which lead to Alla being shot at. It should be noted, however, that the SCRA hates the Lane Hackers and Outcasts. The Xenos and Junkers are more "You leave us alone, we'll leave you alone."
Now, Alla should of stopped firing once you had stopped, however he wasn't informed that we were trying to be friendly with the Junkers, so for him, it didn't come to mind that you shooting him was an accident . It merely seemed as if you had shot, he dodged well enough, so you changed target.
Now, according to Alla, he stopped firing when he was informed that the Trotsky had talked to the Congress before. However, it is understandable that in the heat of battle, you may not of noticed this.
If I missed anything, let me know. Otherwise, I believe this basically clears things up as a misunderstanding.