Nope, again their mandate is just to get the souls to Oribos. Once the souls are there, their job is over.
Again, they couldn’t have held onto the souls even if they wanted to, because A. The gateway connecting Oribos to Bastion for soul transfer was not active before we got there and B. The Archon would not have permitted it in the first place as she is a firm believer in the Path, and doesn’t permit deviations from it.