Multisite email user registration–no way to remove accidental entries?

Using 4.1-alpha-20141019 Multisite configuration. When adding a new user, I forgot to check the “Skip Confirmation Email” box….which means that a user invitation was sent to the email address–but is not official until confirmation.

Consequently, when listing all users in a particular site, or even as a network administrator, these unconfirmed users don’t show up in the interface listing network or site users. Neither do they show up in the database, which means I have no way of “recalling” accidental user registrations.

Thank you as always for what you do here in these forums. Greatly appreciated.