Hiding a column is not much more than setting it's column width to zero (from what I can tell since the both behave the same way). I tried some low numbers and it looks like setting column width to 0.05 will effectively hide the column, while still showing the data. Anything lower and the data is gone. Unfortunately, excel will not tab over the column like it will when it is hidden. Another option is to put the column way off to the right so it is never seen.
Seems like a flaw in excel if you ask me...
K