I seriously do not know how can the prerelease license for Visual Studio 2013 can be expired. The prerelease of Visual Studio only for MVPs and it should not need to expire it.
I spent more than 1 hour to install the VS 2013 then after that I could not use it. If you need to uninstall all the components that have been added during the unusable installation then would be nightmare.
Luckily I have a RTM iso. I spent another more than 1 hour time to Repair it and somehow it worked.
So I believe if you hit the same problem Do not uninstall and just Repair using the latest iso for Visual Studio. Good luck!