Alright. Here is a very rough version of the superimposed images.
Look at either end of the table. The two guys look a little bit like Knights... nothing fascinating but kind of weird. The guy two seats away from Jeebus kind of looks like he's holding a kid. And I suppose that red blotch in front of Mr. Christ is supposed to resemble the "holy grail". This is hardly groundbreaking, but maybe things will become more clear when the links to the cleaner image are back up.