Regarding the code on github, yes, that did partially fix it. Now all users can be found via their user id # rather than username.
The only problem I see so far is that the code didnt update the activity feed. If you click a name for a user in the activity feed it is still trying to locate user the old way but the user icons on the newsfeed are correct and try to take you to user profile with their user id #.
So say for example:
James Gill wrote a new post, Gluten
The name James Gill is still trying to render the /members/username/ but not the /members/user id#/
but the rest of the site except activity feed appears to be working right now. only the icons on the activity feed try to render /members/user id#/