My questions are... Was Meatchaser supposed to represent Hector's self-destruction tendencies, and that's why during the first ending, after we allow him destroy himself, the nurse supposedly finds Hector dead from suicide? And, if you actually thought about that, was Hector commited into the asylum for some kind of a crime?
About the Meatchaser, you are right... but Hector is not dead at the end of the first ending, and no, he's not a criminal.
It's a fight against his mental disorders (mainly Schizophrenia).
We don't wanna spoil to much. Main goal of Silent Lullaby is to let the player in some kind of confusion state.
So, sorry if we can't go into too much detail.