Thank you Abner for this.
I noticed the final cut of Oskar and the arm were digitally un-focused from the original, probably to focus on the head dropping in the pool (maybe because the arm looked pretty fake).
Here's Kåre, Lina and the said arm ready to roll.
I think there are lots of goodies as yet unreleased, if they ever will be.
Refering to the castration flash-back scene-
JAL: They actually shot parts of that. Or started shooting, I know, the one with Eli’s horrible background when she kisses Oskar, or it’s earlier in the movie. I’ve seen brief... it was supposed to be very dreamlike and short and very nasty. And it was, but... it fell over. So it wasn’t included.
Interviewer: The editing process...
JAL: The editing thing. So I’ve seen some of those scenes, that are really great but that are not in the film.
Interviewer: Could it be something for the DVD perhaps later?
JAL: Maybe. But I think Tomas is very disinclined to things like that. I think he kind of wants it to be... like This is what’s there. I think.
Wish they did have a breakdown of the scene. 
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