Well, reading this article:
https://www.ohtuleht.ee/7790/andi-meister-suudan-koiki-oma-vaiteid-toestada makes at least me wonder.
Google translate:
"Monday's Postimees accused Meister of concealing facts and versions known to him. Postimees asks why Meister did not speak earlier about Avo Piht's possible escape or misunderstandings during the diving work on the wreck.
According to Meister, as chairman of the commission, he could not speak publicly about his doubts because he did not have any at the time. He confirmed that he arrived at most of the claims in the book through a long research process that he began after leaving the post of chairman of the commission."
8 pages of the book, translated to Swedish is available here:
https://sok.riksarkivet.se/estonia?Fritext=SE/SPF/1/ES/22&page=60&postid=Arkis+F75BF2A2-6ED2-446E-BD64-7C8912CD27B2&tab=post#tab
It reads as a diary/stream of consciousness type writing, rather than a clear structured analysis of a situation.