You are pressing the point into somewhat dangerous territory.
NOW you are telling me (in effect) that I do not obey the commandments of the Lord because I WON'T SHAKE HANDS?
Time for your med-check, froggie.
I'm saying that you should exchange a "Sign of Peace" in some way (handshake, smile, whatever.... Purposely standing a pew away from someone at Mass, just so you do not have to greet them, seems to me to be doing the exact of what Christ would do or commanded.