Trying to convert a spread/booklet page order to a normal page order.

I have a couple hundred documents that were originally booklets that were printed as stapled booklet, they have been cropped so that there is a single page per image I'm just trying to find an easy way to reorder the pages to be in the correct order than manually clicking and dragging over 3k images. I think it can be done with something similar to a reverse page order function I have since all the pages follow a set pattern, as in the first image is the last, and the second image is the first, then second to last, to second, and so on.

app.addMenuItem({ cName: "Reverse", cParent: "Document", cExec: "PPReversePages();", cEnable: "event.rc = (event.target != null);", nPos: 0
});

function PPReversePages()
{
    var t = app.thermometer;
    t.duration = this.numPages;
    t.begin();
    for (i = this.numPages - 1; i >= 0; i--)
    {
        t.value = (i-this.numPages)*-1;
        this.movePage(i);
        t.text = 'Moving page ' + (i + 1);
    }
    t.end();   
}// JavaScript Document

is the code I am using to reverse the page order.

Any help would be appreciated.