After you've updated the TOC you can select it and press Ctrl-Q to reset the TOC paragraphs to their style definitions. This should be sufficient to remove the Jason tabs.
I use a macro to update the TOCs in order not to worry about the Jason tab issue.
Code:
'remove the jason tabs (local formatting tabs inserted in toc with hanging text)
Dim aTOC as TableOfContents
For Each aTOC In ActiveDocument.TablesOfContents
aTOC.Update
aTOC.Range.ParagraphFormat.Reset
Next aTOC