Having installed the anniversary update more than 10 days ago I don't appear to have an easy way to uninstall this update.  Google indicates that my only alternative involves re-installing Windows.

My reason for going back is that with this update Microsoft have again changed the way Windows behaves.  Instead of making new features optional and available if required, they have made at least some of them compulsory and unavoidable.  I am referring to the compulsory use of the lock screen on startup - a pointless but unavoidable change that has annoyed me more intensely as time goes by.

So - is there a way of uninstalling this update when more than 10 days have elapsed since installation?