 What likely happens to Crownwall after the story is over?
Crownwall sat on the steps, puffed alight a cigarette, and blew expert smoke rings toward the guards. Crownwall stamped out his smoke and ambled after the hurrying courtier along tremendous corridors, through elaborate waiting rooms, under guarded doorways, until he was finally bowed through a small curtained arch. There was even serious discussion of destroying Earth out of hand, while it is still possible. "Could we have done anything else that would have kept you from landing on Earth and taking us over?" asked Crownwall. Even if you could get down to the bottom of the ocean and tamper with the bomb, you would only succeed in setting it off, and that's what the Sunda had been in favor of in the first place.
 He is left to help find a new path for the Earth government as his old work is no longer possible
 He has to find a new line of work because he messed up so badly  He works to rebuild the space travel technology that he eventually can share with other species  He is left to help find a new path for the Earth government as his old work is no longer possible  He is promoted for accomplishing his mission and continues to explore space