"evidently" Again putting their own ideas in and speculating on what may or may not have occurred or what it may or may not have meant. They have to pick everything to pieces to fit what they choose to believe. I agree with moshe - Jesus would have partaken.
In all the Watchtower Society's picking everything apart and interpreting the way they do, they lose sight of what Christianity is truly meant to be. They are not Chrisitan - they are Pharisees.