Not redirecting from https to http when logged in

We're seeing an issue on our staging and live environments where users aren't being redirected properly from https to http. We have set up secure pages so that "user/*" pages are secure. But when a user navigates from a "user/*" page to a page that should not be secure (like the homepage), the user doesn't get redirected to http, but is still in https. We're only seeing this in our environments where there is a load balancer involved.

We've tried the solution posted here (http://www.metaltoad.com/blog/running-drupal-secure-pages-behind-proxy) -- but this doesn't work for authenticated users. The redirect from https to http does work for anonymous users. Any insight would be appreciated.