Can't login after logout

[Piterden]

Lets imagine that we have one-page website.
When we have logout the site - we have redirecting to page with POST parameters like

http://your-site.com/?service=logout

Now if we don't refresh page and want to login to site again - your plugin after login makes redirect back to page http://your-site.com/?service=logout

I solve this problem, adding $arr = str_replace(["service=logout&", "?service=logout"], "", $arr); code to the end of HybridAuth snippet.
I suppose it is not actually right solution and so I decided not to do pull-request.