I use Quickbooks for payroll and it used the actual remittance amount for line 82.  CRA requires that you file a PD27 if you claimed TWS.  This is so they can reconcile the variance.  If you add the TWS in line 82, there's still going to be a variance to CRA's records since you actually remitted a lower amount.  I can't find anything on the CRA site about adding the TWS so my personal 2 cents is line 82 should be the actual remittance amount since CRA hasn't indicated differently.