d3-quadtree | Two-dimensional recursive spatial subdivision

I have a map that has some overlapping points. I'm using a quadtree and turf.js to determine, when I click on a point, how many other points are within a 30 mile radius.

What I'd like to do (if there's more than one point in that radius) is use d3.forceSimulation to equally spread out the overlapping points.

This is a pretty close example of what I want to do, but uses d3v3 and google maps: http://bl.ocks.org/cdmahoney/raw/9876525/?raw=true

I have included d3.forceSimulation and when I click on a place with more than one point within the 30 mile radius, the points do take on the force-- but they move up to the left hand corner of the page.

How can I get the points to push out in even distances from where I click on the map, like this:

Help very much appreciated!!