Repeat after me!

You CANNOT transfer use of a URL by deleting it.
You CANNOT transfer use of a URL by deleting it.
You CANNOT transfer use of a URL by deleting it.

You CANNOT transfer use of a URL by deleting the owning account.
You CANNOT transfer use of a URL by deleting the owning account.
You CANNOT transfer use of a URL by deleting the owning account.

For details, see  ~Is Your Blog Owned By The Wrong Account?