From the article:
But even before the film’s debut, the accuracy of those staged depictions of Miscavige losing his temper and hitting church members was called into question by Rathbun himself.
“The ‘re-creation’ was in fact a creation,” Rathbun wrote on his blog in September.
“Even though they worked with me for a year on that scene, I was not able to submit a script for an actual past occurrence to ‘re-create’ that could pass Theroux’s standards for lurid and shocking theater.”
Read more here: http://www.reuters.com/article/us-film-scientology-idUSKBN16K2SZ