I can still see a path where the manager was stupid but not malicious. The manager sent on a document which he was too lazy to check at least had the right endpoints but left the GP's contact details on.
I could also imagine intentional harm to GP's reputation was the goal, with really clumsy execution.
replyEither way, that person should not be managing anything.
replyAnd if it was an honest mistake, they need to come out and apologize both to the IC and to the team that is using the documentation.