To apply the script, you can use Log Explorer's 'Run SQL Script' function.
Select this function from the left-hand toolbar, open the script that was just created, and click the 'Run' button to revert the row to the previous values.
You can confirm that the changes have been applied by refreshing the browse view (F5) and creating a new Row Revision History for the selected row. The 'current row' values have reverted to the selected state.
Note that unlike using traditional recovery and roll forward methods, the new data that was added to the database after the errant transaction has not been affected.
Click 'Next' to continue.