The Green's power
If Quinn had claimed he wasn't worried about the whole Vorden and Raten situation, he would have been lying. He was incredibly worried as he had no clue what had really happened to them, only Sil's account on the matter.
Finally Shiro brought them the confirmation they needed, that the two of them were both still present in Sil's mind. Now, everything they had done and everything they were going to do wouldn't be in vain.
The one most happy about it was undoubtedly Sil. Ever since he was practically walking around the base with a hop and skip in his steps. He greeted everyone that walked past. It was almost like he had turned into a completely different person, on top of that, he would constantly ask Shiro, what Vorden said, and how he was doing, even asking Shiro to speak to him again.