The physical member of Christ consumed is bread, not Jesus. Therefore the answer to the oft asked question “Is the Eucharist cannibalism?”, is ‘no’. We eat Eucharistic bread (which is a member of the body of Christ); not the human flesh of Jesus.
When considering new ideas which stretch our current understanding, consider how mystical our standard dogma is: God became a man; we are called to share in the very divinity of God (CCC 398); matter, spirit and time exist in whatever form God chooses; etc.