Hi all, also found that the W3 Total Cache plugin was causing problems and the repai wouldn’t work. So I connected via ftp, went to wp-content > plugins and renamed the w3 total cache folder to disable it, then run repair. You may still get an error logging into your admin, so go one folder up in your ftp site and find a file named ‘advanced-config.php’ or something similar, and rename that as well.
I then was able to log in, and you guessed it, deleted the little shit! hahaha