Undelete for reiserfs? - I am so fired!

[noah.gellner-H217xnMUJC0sA/PxXw9srA at public.gmane.org]

I was trying to untar a massive file containing *all* the backed up data. The
drive it was on didn't have room so I mv'ed foo.tar to a different drive. Then
disaster struck. Instead of typing tar -xvf foo.tar I typed tar -cvf foo.tar.
This failed but first erased the backup. 

Can I recover from either location?

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