I made my *** Email address is removed for privacy *** my primary yesterday and just learned that it has the following effect:

How does an account rename affect my Windows Phone 7?

On your phone, features that use the new @Outlook.com address will stop working, including Marketplace, Xbox LIVE, SkyDrive, email, and others. To use these features again on your phone, you'd need to restore it to factory settings, which erases all personal content. You will need to set up the phone using your new account. For more information on resetting your phone go here.  Please note, You should choose Windows Live as the account type when going through the Windows Phone 7 setup after resetting the device.  Choosing Outlook as the account type , although intuitive, is not the correct selection. 

I seriously don't have the time to re-install apps and set everything up again, so I just want to switch it back.

When I go back into my account settings, all my aliases have disappeared and (despite being told I would be able to login with my Hotmail address), I can't log in with the Hotmail address...

Is there any way I can switch back?

(And why do I have to switch to Chrome or Firefox to post from my Windows 8 Surface Pro?? Why won't the damn buttons work in Windows 8 with IE??)