If you want to keep the Google Sites you have created in your Google Apps for Teams account you will need to copy your site to another Google Account by 15th October 2012. Your Google Site name will need to change too.
Tip! You need to have another google account ready to copy your site to.
Log into your apps for teams site and navigate to the site you would like to copy > click More > Click on the blue button Sharing and Permissions > fill out the Add people field with the email address of your new Google Account > select 'Is Owner' from the drop down menu > then Share and Save.
Ok, now sign in to your Google Site with the account you shared the site with > click More > click manage site from the drop down menu > scroll down slowly and click on the Copy This site button
Enter a name for your site eg. mysite2012 > fill out the code at the bottom of the page > click on the red copy button > then be patient whilst your site copies. It may take some time depending on the site size, your connection to the internet etc
And you're done!
Tip! If you are using a custom domain you must remove it from your site if you want to map it to your new site.
If you need anymore help contact me or remember to visit the official help pages from Google Apps for Teams Adminstrator Help.