Oh you are talking about the thread, the process at immigration, not my original question, got you. Enter country on 30 exempt and proceed to immigration as others have said. Thanks.
I have an O/A but a mix up with the health care company means I won't have the correct certificate in place for renewal. It's year 2 of my O/A visa so my understanding is that as soon as I leave the country (for the first time in 2 years) the visa will be cancelled.
Thanks for the comments. Leaving the country is a last resort, although I may have to in a few days worst case scenario... I just want to cover my options. Thanks.