Funny thing is they were pals in the past, PMing one another, then he is a "nice guy," we should "lend him an ear" &c...blah blah blah. This is why the biblical stance, not compromise, is important. The guy sows discord, false doctrine, false gospel, calls others lost, is sanctimonious, brags on self, blasphemes Christ and the Gospel.
What does Christ tell us to do about these false teachers who sow discord according to NT doctrine?
Nothing against BillG as far as him personally, just the stance. I see nowhere in Scripture we are to patronize these clowns, or give them an ear. No need to become complicit via bargaining with them. Imagine this dude in a church, he'd be excommunicated from any solid, sound assembly.