If your plugins aren’t present in the /plugins folder anymore, why bother, this is the simplest solution.
Or just rename them to names that the blog isn’t used to, for instance adding an underscore in their folder name’s beginning or end. Upon seeing that, wordpress will automatically turn them off and wait for your green light to turn them back on.
However, your site gave me :
Fatal error: Out of memory (allocated 89653248) (tried to allocate 19456 bytes) in /homepages/16/d109194881/htdocs/baseballheaven/wordpress/wp-includes/locale.php on line 113
This isn’t anymore linked to the plugins, at this point.
Can you consider reinstalling your blog ?
Deleting the contents of /wp-admin and /wp-includes, as well as the files in the root of your wordpress folder, save the wp-config.php.
And reuploading these folder and root folder files, from a freshly downloaded wordpress file from www.remarpro.com.
That shouldn’t make you lose data, your post contents are stored in database, which you are not deleting, and your blog contents’ library is stored in wp-content/wp-uploads, which you aren’t deleting either.