Think about the position all us "evil" DF/DA/Apostates put the society in. You know, we should really use this to better effect.
Most, if not all the people I personally saw "come into the truth" did so because of friendships or family relationships to JWs. I can't think of anyone I knew of who came thru the D-T-D work. So, the society should know that informal witnessing and relationships are its best bet to bring in new people.
The wedding could very well have been the thing to get the ball rolling with some of the non-JW friends and family, that would have led to a Bible study and them 'coming into the truth' (TM). Instead, because of the Society's new insistance and emphasis on shunning, everybody there had a front-row seat to one of the worst aspects of being a JW, and the amount of control they exert. I can't imagine that any of them will have a remotely positive view of the religion from now on, or express any interest whatsoever except "How on earth can you treat your family that way??" (not likely to lead to a Bible study, is it?)
"We" have them between a rock and a hard place. If JWs don't shun us, we could 'rub off' on them, causing people to 'leave the truth' (TM). If they do shun us, it's a horrible example to all who see it, causing people to 'not come into the truth' (TM) in the first place.
(Mr. Burns' voice, rubbing hands) "Yes, Ex-cellent"