"In my opinion it's OK to finish the bottle of wine at home, but not to drink the wine in the glasses that were passed around."
Well, of course not! Think of the back-wash! euuuwww
Seriously though, as a kid, I seem to remember the elders (although they weren't called 'elders' when I wuz a kid) taking the crackers and 'disposing' of them afterwards. I am a little foggy on the disposition of the wine, though.
As to whether it's right or wrong... that all depends on whether you still believe. *shrug*
(Of the 'It doesn't matter to me anymore' - class)
Regards,
Jim TX