You can stop a Will going to probate with a Caveat. A Caveat will ‘block’ probate applications if entered correctly. A Caveat may be removed if the Executor ‘warns’ the Caveat off, but steps can be taken to prevent this happening.
A Caveat can be entered on the Deceased’s estate with the Probate Registry. The Caveat lasts for 6 months and can then be extended for another 6 months, if required.