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I am sorry to hear about this situation. If the beneficiary refuses to sign the final accounting, the Executor has the right to go to the Court and get the final accounting approved by the Judge anyhow. (If so, the beneficiary - you - would be notified of the hearing and can come and contest it).
The beneficiary may also ask the Court to censor the Executor and/or have them pay back any money stole and/or removed from the position if the Judge feels it is necessary.
Finally, the Executor may be used in a separate civil action for fraud, negligence per se, and other related causes of action for assets/money that they took without proper authorization and which was never restored to you.
So if someone in your situation wants to "stop" the closing, one may then refuse to sign the final accounting and force the Executor to go to Court for this, at which time the Court may hear your grievances. In addition, one can sue the Executor in a separate civil suit as explained above.
You would need to get an attorney to do this, I am afraid. I can provide some pro bono links in NY that can provide some limited legal services free of charge but they may or may not take the case. Reply and let me know if this is something you want.
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