Managed to convince Anton Crane of the error of his ways. I'd heard he could potentially kill himself out of guilt, but I ran into him purely by chance in the Lost Hope, where he said he'd left Roseway with Cassandra and sold the research and was going to do something else with his life.
...Except much later that same playthrough, I went back to Roseway looking for marauder armour, went back into the comms room just to see if I'd forgotten anything, and found his body on the floor. So unless Lilya Hagen is onto something, that's, um, probably not right.