Hate to bring this up, but there's some logistical issues here. There's NO way Kojuuro could simply bug the party, Starfall. He was scanned just like everyone else, and any equipment he had, including bugs, would've been confiscated. I mean the don wouldn't be in his position if he allowed bugs in his house, after all.

Also, if Kojuuro's leaving, he's doing so without his weapons, because those were taken too and placed in a location he's not currently aware of so... yeah. Logistical problems.
If you're worried about getting frozen out, I wouldn't, because we're still discussing amongst ourselves what's actually going to happen in regards the next steps.
Also, I might utilize this later on, but would Tony have Marcus's contact info, Bushwacked? I was thinking once the pulse hits, it would be a gambit Tony could play to try and help the group out.