Couldn’t switch the theme since I couldn’t access the wp-login.php page. Did reset the plugins folder via phpMyAdmin but that didn’t seem to resolve the problem.
What finally worked was a cominbation of things 1. removing all of the WP files from the site via FTP and reloading them again 2. deactivating all plugins using phpMyAdmin with this from the codex:
* In the table wp_options, under the option_name column (field) find the active_plugins row
* Change the option_value field to: a:0:{}
Thanks so much for your help!
