Insane Characters, as in, very insane

Well. Yesterday, my characters basically went insane. Hainshaw didn't die in the right boat like I thought he would, he actually shot everyone on board and then sank the boat, and turns out to be Russian. As if that wasn't bad enough, John managed to subdue him, and it turns out that he had a good reason for shooting everyone (a drug had been released into the air that would make them lose all their inhibitions and which meant they would eventually suffer a very excruciating death in about five hours from the point at which they first inhaled it. This drug would cause them to attack comrades when they were released into the rest of Pterodactyl after landing) and that John spent some time in Russia and knows Hainshaw from that time. There has also been an unexpected war, in which the Russian Mafia claimed a large portion of Russia, including Siberia, for themselves, defeating the normal Russians. The UN is scared to intervene, which is why Hainshaw was trying to take over Pterodactyl, so that it could be used to help get rid of the Mafia threat.