The article is unclear as for whether he was still involved with TrueCrypt by the time they got him though. It sounds like he had quite a lot going on to even care for TrueCrypt at that point.
Sure, but he can't assume that his captors are rational. They might very well blackbag him to some undisclosed dungeon and work him over until he convinces them that he doesn't have commit access. (Which duration might exceed his remaining lifespan, in such conditions.)