Membership plugin - best practice uninstalling

Hi, I'm looking for the best way to uninstall the Membership plug in. I, understandably, thought that it would be perfect for a sports club website where people pay to be members of the club.

So I went head first installed and configured then read the manual afterwards. It's now perfectly clear that it's for the restriction and monetising of content and entirely unsuitable for what I need.

Naturally I uninstalled it but now when I log in it redirects to the front page and shows no admin bar to get to the dashboard so I've reverted back to a legacy copy of the site and have found my self with this question!