what I did was looked up the styleid for each of the remaining styles and note those down.
Then I used this hack [
Who's Using Wich Style On One Page] to see which styles were being used and put the styleid number next to each of the ones that I knew. Since they are listed in numerical order, I then search the user table in phpmyadmin for the missing styles until I matched up each of the missing ones with a styleid. Then I ran the query to change those to the default.