Nathan Brown admits any faint hope of a top-eight finish has been extinguished by their rout at the hands of the Rabbitohs.
It marked the most points the Rabbitohs have ever scored against the NZ club.
All the action from the Sunshine Coast as the Warriors look for an unlikely win.
The Kiwis and Australia Kangaroos have already withdrawn from the tournament scheduled for October.
"We are very unhappy with this decision and we are not prepared to take it lying down."
The tournament is scheduled for England in October.
Meanwhile, centre Peta Hiku is poised for a surprise return from injury.
The Warriors have lost 12 games this season, including their last six in a row.
"Fans deserve the opportunity to see the best players performing on the world stage," says Eden Park chief executive Nick Sautner.