Exclude Excel file from re-linking in Access database with VBA

I have a MS Access front end which is linked to a back end database. I also link to one Excel.xls 2003 file. From time to time I want to relink to another back end Access database with similar tables, but I do not want to relink the Excel file.
My database is Access 2003, although I run it in Access 2010, all on my local C drive.
The Excel file is named LastLanded and the sheet that is linked is Named Sheet1. When I go to linked table manager, I see it is linked as "LastLanded  (C:\MeatSCL_CostingData\LastLanded.xls\Sheet1$)" Note the $ sign after the Sheet1.
I have VBA code like below. When I want to exclude an Access table from re-linking it works fine, but when I try it with the Excel file, I get a message:
"The Microsoft Access database engine could not find the object 'Sheet 1$'. Make sure the object exists and that you spell its name correctly. If 'Sheet1$' is not a local object, check your network connection or contact the server administrator."
This also happens even if I add "\Sheet1" or "\Sheet1$" behind the "LastLanded" name.
Can a clever person help me out please.


VBA Code that I use
    Dim dbs As Database
    Dim Tdf As TableDef
    Dim Tdfs As TableDefs
    Set dbs = CurrentDb
    Set Tdfs = dbs.TableDefs
    '
    'Loop through the tables collection
    DoCmd.Hourglass True

    For Each Tdf In Tdfs

        If Tdf.SourceTableName <> "LastLanded" Then

            If Tdf.SourceTableName <> "" Then 'If the table source is other than a base table
                Tdf.Connect = ";DATABASE=" & NewPathname 'Set the new source
                Tdf.RefreshLink 'Refresh the link
            End If

        End If