b.1-This was the first time he had one of his novels adapted for a movie.
Does this necessarily mean that he deliberately had that novel adapted for a movie? No, not necessarily. Couldn't it have been done against his will? It could have intentionally been done by him or by someone else with or without his knowledge or permission.
2-He had his arm broken.
Does this necessarily mean that he paid someone to break his arm? Very unlikely. Additional context would make it clear that it was broken by some other means, for example, in an athletic contest.