Yeah... That probably because either the drive thought it was falling and triggered the HDD falling mechanism (often found on 2.5" hdd) which would move the arms off the disks to prevent them from hitting it and damaging the platters to unrecoverable states.
Or if done on 3.5" without this feature built into it, could just damage the platters.
Would probably be less risky to open it up and unstick the arms yourself.