Dutch news seems to give different information.
The operation happened in 2007. 1.5 to 2 years later, Van Sabben returned to Iran. Then he suddenly left and two weeks later died on 16/01/2009.
https://www.volkskrant.nl/nieuws-achtergrond/aivd-speelde-cr...
https://nos.nl/artikel/2504114-nederlander-saboteerde-atoomc...
The Dutch tech site tweakers.net is discussing it here https://tweakers.net/nieuws/217216/volkskrant-identiteit-van...