So I've just checked in Chrome, where I'm logged into googlemail, and I can't see any of my YouTube uploads until I create a channel, and it wants to create a Google+ account and use my real name to do this.
If I search YouTube on Firefox (not logged into Google) then I can see all of my uploads under my original YouTube name. Does this mean I really can't manage/upload any videos without a Google+ account and changing my display name??
Strange thing, I only use Chrome in work...try just logging into TY with an incognito window?