Googlebot Stuck on OSCommerce Site

When I check the Who's online page on the backend of my OSCommerce site the following IP address will sometimes be appearing 60+ times: [login to view URL] I believe it is a googlebot. At the present time I can only see one instance of it. However it is on the page: /[login to view URL]¤cy=BRL I don't even know how it is finding such long url strings. Clearly I don't want it to be indexing such long strings. It should only index /[login to view URL] and /[login to view URL] (just an example of a filter id number) I have also noticed it here: /[login to view URL] It shouldn't find urls in this format because I use the SEO URLS contribution. There should not be any links on our site to the urls in this format! I also use a contribution that sets up canonical links (something like 'sam's canonical link contribution'). All these problems seem to have arisen after installing the loginradius contribution (which allows customers to login via facebook/gmail etc). However, because this module was directing customers (and I believe the googlebots) to [login to view URL] I uninstalled it. In the past week many of our pages (listed on our google sitemap) have dropped out of the google index. This seems to be because google was seeing [login to view URL] for many of our pages, and is now trying to index pages with long query strings attached and penalising for duplicate content. I have prevent spider sessions set to true, and force cookie use on. ...so the job is to sort this out so that google spiders and indexes our site normally again. We would like someone with experience because SEO is very important to our business.