Decided to dig into the API. Place this method in a module:
Public Sub ColumnVisible(Extends lb as WebListBox, index as Integer, Assigns value as Boolean)
Session.ExecuteJavaScript( "$('#" + lb.ControlID + "_table').DataTable().column(" + index.ToString( "#" ) + ").visible(" + value.ToString.Lowercase + ");" )
End Sub
Call as:
Listbox1.ColumnVisible(1) = False