I've been slowly tagging my MP3s with worthwhile recurring gags (drugs, voice modulator, barging, Clifford, etc. ) for the purposes of nothing but my own amusement, so I've got a little bit of the Blu timeline. Blu seemed to be a pretty isolated 2007 incident, but like you mentioned, there is the Christmas greetings from Consolidated Cardboard in Dec. of 2011 which apparently mentioned Blu. I don't recall it 100% off the top of my head, but there were several characters chiming in, so it's possible Bryce is in there briefly. Might be a good place for you to start.