Yes, there is a way to filter blocking bugs. Here is some information on how to use filtering in the new TeamPulse version: http://www.telerik.com/agile-project-management-tools/support-resources/teampulse-interface/views/filtering.aspx
When you open the "Add filter" menu you can either search for the filter by typing "blocking" in the search field or just scroll down to find it.
In case you want to have a custom view with a specific set of filters you can always click on "Create view" from the navigation, apply the filters and save the view. Here is some information about saving and sharing views: http://www.telerik.com/agile-project-management-tools/support-resources/teampulse-interface/views/saving-and-sharing-views.aspx
Please, do not hesitate to contact us again if you need any further assistance.