mu-disable-plugins-multisite.php

<?php

add_filter('site_option_active_sitewide_plugins', 'modify_sitewide_plugins');

function modify_sitewide_plugins($value) {
    global $current_blog;

    if( $current_blog->blog_id == 83 ) {
        unset($value['sendgrid-email-delivery-simplified/wpsendgrid.php']);
    }

    return $value;
}