Spoiler:What about the very first episode in the movie then, where this 'someone' gets a hint about the employer of his wife being dead? Or are you just saying that everything that doesn't make sense is basically a 'product of his schizophrenic mind'? I'm rather interested in an exact chronological order of all the events in LH.
So lets suppose the guy killes his wife's employer. But why should he, if he only learns about him after the party when the employer is already dead?