Andreas Bethmann talks (in German with French subtitles) about the making of "Exitus Interruptus II : House of Pain" (2008)
this sequel was shot with some light hardcore and a ghost fellatio scene but he didn't use those for the final cut and it can only be seen as an extra on the french Mad Movies DVD
imdb.com/title/tt1290500/
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Hartelijk Dank
Dankeschön