Regarding what I think was the question of this thread, where do you draw the line with heel/fan interaction? I'unno. But if the unwanted press from these heel antics are indeed worrying Vince then I think he needs to stop running around threatening/firing people or whatever, just sit his talent down and lay out the things he specifically does not want them doing or saying. Because the talent seem to be just as in the dark on this as we are.
In Del Rio's case, I don't see the big deal either. Just a sign that got ripped up, nothing new at all and it seems no real damage was done. To me, its the equivalent of someone who goes to a comedy club and takes offense to typical material, unable to realize the person on stage is a persona, a performer who can't possibly guess everyone's sensitivities.
While the mother has a right to be upset that her child was emotionally hurt by this big, seemingly arrogant prick, the mother should exercise some empathy herself. Could she not have just explained to her kid that the man was simply playing a character and would do no such thing to her in real life, instead of circumventing that responsibility by looking for someone to blame/attack/get "compensation" from?