"Viscerally satisfying, perhaps, but explicitly frowned upon in Scripture."
The scriptural prohibition only talks about disputes between believers--brother Christians. These people are not Christians, and thus there is no scriptural consideration for them. The sooner the remnant faithful in ECUSA realizes this, and take out all tools at their disposal, the better. At this point, the wolves in sheeps' clothing are just having a field day.
But consider: if Hansen ever goes to court on that basis, then he'll have earned the "abandonment of Communion" charge, and thus tossed his own case out of court. Just one of those unpleasant logical outcomes of being an Episcopal Church.
Better to see how the presentment charges against Smith go, first.