Disney will probably let you change the name.
Apparently Disney will allow a one time redeposit of points if it is an emergency . This is a once in a lifetime deal and I have no idea how it works if you have borrowed points.
If you still want to rent the points, I would recommend reposting with the dates and the price you want. With the late date, you might want to stay on the low end of point renting. (It is too late to cancel Disney hotels and plane tickets are not cheap at this date!)