Confused?
The Sponsor of isangkuzang's husband is not willing to give the release so he can move immediately to the new Sponsor. The sponsor is planning to cancel the RP of isang' husband so the family should first cancel and leave the country before him. The Sponsor will give isang's husband the NOC with which he can come again and work for another Sponsor immediately.

I think they must have the statement to apply for a family visa. If the RP is cancelled then he will not be able to keep the same account number.