The NonKrupp subarrangement conjecture for pseudocircle arrangements

Let ${\cal A}$ be a connected digon-free arrangement of pseudocircles. A triple of pseudocircles forms a triangle in ${\cal A}$ when its three pseudocircles bound such a triangular cell, and it is NonKrupp when it is not a Krupp configuration. Let ${\cal N}_6^\Delta$ denote the specified arrangement of six pseudocircles.

NonKrupp subarrangement conjecture. If every triple of pseudocircles which forms a triangle in ${\cal A}$ is NonKrupp, then ${\cal A}$ contains ${\cal N}_6^\Delta$ as a subarrangement.

All arrangements known to be non-circularizable by the stated theorem contain ${\cal N}_6^\Delta$ as a subarrangement, motivating this conjecture. Its resolution is not given in the source.