I have a buddypress site which used to have some users

I have a buddypress site which used to have some users on but those users have been removed though they still reflect in members counts for groups and in the users admin section

screenshots illustrating attached
http://the-colab.clarify-it.com/d/3nxncm

It's running the Razor theme from paralellus

I can post login details privately if need be.
Please let me know if anyone has any idea of why these users still show