I am absolutely fascinated by what is happening on that upper border of the Caribbean Plate. This earthquake looks far out, and probably didn't do much. In that area, triggered landslides are the big threat. They've had lots of earthquakes to knock down weak housing. The clean topography shows that M9's regularly rip through the area.
I have no idea on the mechanism that pushes the Caribbean Plate. Would an M9 in this region provide that push? It is very weird.