No ordnance or law, that was just my opinion. Inventive, witty heckling is, IMO, a part of the game (there's no law/rule that *mandates* the use of batboys, either
AFAIK, but it's a tradition). Some hecklers are skilled, near-professionals at it. That leaves out profanity, however, which is almost always neither.
I just thought at the time, that the PU should have either warned the spectator directly or warned the coach (although all he could do was ask/plead that the spec stop) about it, esp 2-3 innings after the fact. He did neither, and it continued for most of the game. No real crime, I suppose, just annoying.