well, can you please restore the back up and uninstall plugin again, as soon as you do that, let me know, so we could reproduce the issue with the uninstalled video uploader plugin
No, I don't see this error on the survey page. Moreover it has nothing to do with the issue. There are a lot third-party javascript and I am more than sure that it breaks the javascript.
i think whats is happening with the survey page and stuff maybe the site is still in eror format and is held in server cashe because as time goes on things are starting to work