Admin count shows more than are listed

One of my WP blogs was hacked last November. I discovered within 7 days and restored from backup. I then installed a variety of security add ins and have had no trouble since. I am currently running WP 3 on Apache on Linux.

My problem is that the page brought up by users.php shows “Administrator (10)”, but when I click that to see the list of admins, it shows only one – the correct one…me (it is not called admin, of course). I have another account that I use for editing posts. If I go through the complete list of all users, there is only the one shown as an Administrator. The counts in brackets are consistent with the (10) figure: In other words: All = 10 + number of editors plus number of subscribers.

I have used PHPMyAdmin to examine the wp_users and wp_usermeta tables in the database, and although I can see my admin user record in wp_users, I can’t see how it is flagged as an admin. My editor user record shows as “Editor” in meta, but the administrator record doesn’t appear there.

Can anyone suggest how I find these other 9 admins in order to delete them?

Thanks
Vic