You know, I generally agree with Steve. I commented that a partaker should partake. I wouldn't go and mock the whole thing by partaking, but a partaker who truly believes they should not reject the "emblems" would want to partake if he went. I mean, he was invited, that's what the WTS wants outsiders to do- go to their memorial. He partakes of the bread and wine at his services and feels strongly about not rejecting it. Isn't that what this is really all about- following your calling and doing as Jesus expects of you?
Otherwise, try a regular meeting to learn about the JW's.