Hey, I have the same problem. After installing 1.0 - 1.0.2 all of my kerbals changed specialization. And I think i have replication steps. I flew a mission just before upgrading to 1.0, and one of my pilots was lost. I landed earlier in the mission, and I knew that it autosaved. So I closed KSP instead of reverting hoping to keep it from autosaving, and before I did it said vessel has been destroyed, cannot autosave at this point. So I loaded it up again, opened my game, and it turned out that it did autosave, my kerbal was listed as KIA. I loaded an earlier save before the crash and flew the mission. Then I upgraded to 1.0 - 1.0.2 and when I went back in, I noticed that all of my kerbals changed specialization except for the original 3. After reading this, I remembered that I lost a kerbal just before upgrading. It might have changed then. And I remember being able to use SAS with someone who wasn't a pilot.