Did Mena forget what he wrote in Malevolence (spoiler)?

First off, I really liked the movie. It was mean, it was atmospheric, it had emotion when it was needed and there was a hopeless sense of loss that you could feel throughout the movie.

The only problem I had with it was the way Sutter was killed. It doesn't match up with what we were told in Malevolence. When the detective was reading Sutter's old journal entries, he quotes them talking about how Sutter knows Martin is "going to do it tonight" and that he can hear him in his closet. He says Martin has gotten too strong and he doesn't know if he'll be able to fight him off. It was pretty creepy, but none of it matches what happened at the end of Bereavement. Martin is still a kid when he kills Sutter, Sutter was not writing in his journal at the time, and Martin wasn't in his closet.

It's just an unfortunate plot hole in an otherwise great movie.