Setting aside the actual punishment variant and looking at black's simplest reply:

Click Here To Show Diagram Code

[go]$$W
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . 1 . . . . . . . . . . . . . . . . |
$$ | . X 2 . . . . . . . . . . . . . . . . |
$$ | . O X X . . . . . , . . . . . , . . . |
$$ | . 3 O O X X X . . . . . . . . . . . . |
$$ | . . . . O O . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ -----------------------------------------[/go]

If white then goes back to save the stone, then the result is the same as the normal joseki: Black is connected and white is alive in the corner. However, is plastered against black's wall and is for all intents and purposes already dead, AND black is leaving the joseki with sente, where he normally has to take gote. If white doesn't take , then later on, white has problems similar to what Edlee mentioned.

"simplest" here is maybe misleading. The connect above is another nonsense move, like itself.
Perhaps "simple-minded" ?

The actual simplest, correct, and only local reply for B is still the atari:

Click Here To Show Diagram Code

[go]$$W
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . 1 . . . . . . . . . . . . . . . . |
$$ | . X . . . . . . . . . . . . . . . . . |
$$ | . O X X . . . . . , . . . . . , . . . |
$$ | . 2 O O X X X . . . . . . . . . . . . |
$$ | . . . . O O . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ -----------------------------------------[/go]

Not at all. Far from it. We can say is badly placed and damaged.
But we cannot say it's "for all intents and purposes already dead."
It still has lots of aji. If the nearby conditions change in the future,
it can even come back and attack B's wall.

Hi i was looking at avalanche joseki and i have a question what if he cuts at what approach should i take?
It seems perfectly fine to me, is this another joseki and if yeah what it is the name so i can have a look at it. Thanks in advance.

Ps:Tried to uploaded at sgf format but for some reason i kept taking the invalid game msg, is there something wrong with the site because i did all the steps from the how to post sgf thread.

That's not the avalanche joseki, 2 is bad but not awful, 3 is awful and game losing move, 4 is good move and only move. 5 is black resign. Avalanche joseki is 2 at d15, then 3 and then 4 at 2. Move order is very important in Go.

Yeah you are right i mixed up the move order sorry. On a funny note now that i looked up this position there are some pro games played with this continuation in a corner.

I doubt there are pro games with these moves in this order. More likely this shape arose as a result of an ignored ko threat or ladder breaker on a shimari.

P.S. lordish based on your posts here I think you would do better to improve your basic instincts than study joseki. http://senseis.xmp.net/?BasicInstincts