<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by Chiangi:
After deplaning, I suggest that you just go back to the same gate. You need to clear security before getting back to the same gate.</font>
I'm pretty sure that reclearing security is not required. As has been mentioned AKL is a single-concourse airport and the security checkpoint is located right after immigration. It should be possible to exit the aircraft and just stay put in the gate lounge.