Way to convert claims tokens to Kerberos that SP2010 accepts

I'm hoping there is an F5 way to do what is described in this article:

http://blog.auth360.net/2010/12/03/the-triumvirate-uag-2010sp1-ad-fs-2-0-and-kerberos/

Users login to a mobile app using claims-based authentication at the front-end and need to connect to SharePoint 2010 using Kerberos at the back-end. SharePoint 2010 in this case does NOT support claims. A user will logon via AD FS and then need F5 to request a Kerberos ticket on behalf of the user and use that ticket to authenticate to SharePoint 2010. We’re mixing authentication using claims-based authentication at the edge and then Kerberos for authenticating to SharePoint 2010.