https://ttlc.intuit.com/turbotax-support/en-us/help-article/tax-forms/view-delete-forms-turbotax-online/L7SZhwCHv_US_en_US?uid=lhrdtty7
Once you have successfulled efiled the return or mailed it in with the injured spouse form you cannot amend the return to remove it ... you must let the return be fully processed as is.