Reddit recognizes different query strings as being different pages. So, you can add a query string to the end that is the same as the hash.
become
http://noobjs.org/#/posts/15?/posts/15
http://noobjs.org/#/posts/16?/posts/16
It's not the prettiest, but it will work fine. Alternatively, you could write a check on page load against the URL to change ? into #.
window.location = window.location.href.replace("?", "#");
and post query string versions to reddit:
EDIT:
Currently, Ember does not have strong support for query parameters, but in this situation, a slight variation worked: