This is getting to be highly convoluted game of revenge (Gustang's revenge) that is designed to Strip away Traumeiri's support (Family) from him and inflict emotional pain from loss/death of someone he lonce cared for, who may have been killed by Enkidou.
Anyhow, I don't see Gustang as the caring sort unless it benefits him. hopefully he has a way to keep Bam's team/ chess pieces safe, of course Bam will rise to the occasion to protect his friends.
The real villain here is Zahard, of course. But Gustang may not have yet any means to strike out at Zahard, EXCEPT perhaps Bam....Another Thorn, or Information perhaps?
Finally, it's interesting that Luslec is deciding to act now after not acting for so long. Gustang has worked with FUG in the past, maybe he's still be doing so even now. Speaking of FUG, Rachel somehow was able to smoothly leave Gustang's base (smoth sailing), and she has been to tha sprout before this time. Is it possible she is working for Gustang?