yeah some sites are pain like that
What is happening is you click the google link, it takes you to page 1 which then instantly redirects you to another page (page2). so when you click back it takes you back to page1again that then just instantly redirects you back to page2.
Double clicking back quickly normally gets you back to google, or click the little down arrow to the right of the back button and select google from the drop down list to skip the redirect page (page1)