Q as pre-easter tradition

I have just started reading a new book by Jimmy Dunn called A New Perspective On Jesus: What The Quest For The Historical Jesus Missed. This afternoon I read an interesting bit on what he considers to be the origin of Q (believed by many scholars to be a non-extant source for both Matthew and Luke). He points out that most scholars believe that Q is Galilean in flavour, did not contain any references to Jesus' death and resurrection, and because of this points to its origin being in a Galilean Christian community that saw Jesus very differently to most other Christians. Dunn argues, very convincingly, that this is avoiding the more obvious conclusion that it originates in the oral traditions of the disciples of Jesus during his life (still a literary document though but recording a oral tradition). That is stories and teachings of Jesus they repeated about Jesus before his death. A very interesting thought!