Well, you could try a bit of gesture politics. Something weird, liek pay a donation, then change it, then leave. Optional extra: demand refund of donation. Except that I don't think you should leave, or pay, unless you want to. Too useful to people here for one thing, even if not everyone wants to know. Tech advice is often hard to come by, anyone capable of giving it freely should be valued for the chance of doing it again if nothing else.
Actually your best shot is to assume that Spec HAS noticed the call by now, let it go for a while, see if anything happens. As I suspect he doesn't want to stir things up, he might change it IF he thinks he's risking upset more than anyone else. He knows he's hit home, the question is whether he cares enough to stop. So don't goad him, cos not goading him is the best way to find out if it's down to him now.