Stanis and the Cryoman were infected with the Nebari virus! Or, rather, the feral version the Peacekeepers had. I know that John and Chiana acted unlike the Cryoman when they were infected, but that's because the virus that infected them was in the early stage. The virus that infected Stanis and the Cryoman (Tim) was in it's later stages... well, for Tim anyway. That's why he puked on Jothee. And now Jothee's infected with it, too!