More than 400 properties were flooded during a powerful storm last week that brought torrential rain and strong winds.
Earle Taka, also known as Pat, was last seen in mid-March in Waipukurau.
A contractor who has worked on the bar for decades says there may have been a risk assessment failure.
Police say the scene is safe and the culprits have been found.
The quakes all had the same epicentre.
An operation is taking place on Sunday.
Two men, 19 and 34, now face several charges related to drugs and firearms.
Fire officers arrived at the scene just after 9.30pm and activated a third alarm, the highest level, when its scale became apparent.
Police will be speaking with the victim once he has recovered from his injuries.
