I'm only reporting these earthquakes when they get to M4. Unlike the Alaska cluster, these seem to be very closed at the M3-ish level. That is very non-fractal, so it could be deep fluids. If these earthquakes start curving around Anguilla, then there is a clearer mechanism. There has been lots of earthquake action in the past
And looking at this, I'm probably blowing smoke about any concern of a cluster.