I have also lost my super admin. I accidently dropped the database record for my administrator user, but I had backed it up and restored the database field to the identical setting.
I still somehow lost my super admin. I double checked the wp_sitemeta table and my site admins says:
a:1:{i:1;s:10:”administra”;} which matches up to my admin name.
Any ideas about what else might be causing a problem?