Darren Wenham said the iwi who owned and managed the park had been very helpful.
But police said it appeared the man rode off the track and into the wire.
A police spokesman said police investigated the incident and determined the wire was farm wire, consistent with wire being used for stock maintenance.
He said the incident appeared to be an accident and there was no further police action being taken. The motorcycle park remained closed.
Woodhill Forest is owned by Ngā Maunga Whakahii o Kaipara Ngahere.
Chief executive Malcolm Paterson said The Sandpit leased the land for offroad riding.
He said they were working on identifying and managing the hazard that caused the accident while the park was closed.
Paterson said as far as he was aware, the park generally worked well and had a lot of users.
He said offroad motorcycling did carry some risks but the park did not have experiences like this on a regular basis.
- Newstalk ZB