After watching Spider as well as another short film titled Lucky, it seems that Nash Edgerton has a slightly warped mind that relishes the bizarre unexpected plot twist. Even though the final twist in Spider is rather macabre, I also found it kind of humorous - sort of a "that's horrid but it does serve you right" reaction.
The production of Spider is very real-life and natural feeling, gritty rather than slick. The actress who plays Jill, Mirrah Foulkes, is especially good. Her reactions to Jack's 'sweeet' attempts at making up and to his dreadfully misguided joke, are most believable.
Watching Spider is like reading an imaginative short story, I hope to be able to view more offbeat and good stories by Mr. Edgerton.