There is a plan B and a policy for that but they've perhaps worked out that it's flawed because most winter gallopers won't want to race on the poly.
1. If a turf racetrack is determined by NZTR or a Stipendiary Steward to be unsuitable or unsafe, or is otherwise
unavailable, for racing, NZTR may decide to transfer a racemeeting from that racetrack to a synthetic
racetrack if, in its opinion, there are no other suitable turf racetracks in the relevant region to hold the
racemeeting or it is not otherwise appropriate in the circumstances to transfer the meeting to a turf track