Carey was arrested, and despite producing Blamey's letter and earnest assurances that the mines were dummies, they refused to allow him to leave or to allow the removal of the mines, which the RAN feared were real and might accidentally detonate. Mott was able to arrange Carey's release, but only on the condition that he left Z Special Unit. "Operation Scorpion" was scrapped due to a lack of submarine transport, but Mott and Lyon had learned many valuable lessons from the raid.