This film is mediocre in every way, and the only element it excelled at is pushing and exploiting stereotypes and clichés about disability. Anti-social, emotionally undeveloped and insecure, desperate, shut in, angry, all packed into the lead character. I am not surprised it has had to be re-edited over and over, for years. Really it is disgusting. The makers ought to be ashamed.
The two twists and the end (I wont spoil them) are truly groan worth and patently contrived to try and button up the story.