Anything is possible until it has been disproven in story or WOJ, but I doubt this. As Rasins said, it seems like too much job for one man. In addition, Rashid presumably uses magic with a similar basis as Eb and Harry (with a different focus of course) while Odin most likely uses a rune based magic. I know that practitioners can learn different types of magic, but I doubt Odin would take the time.