I rented a pair of bolt cutters from my local hardware store for 7 dollars and cut all the hooks
Ahhh home depot has a hydraulic pump bolt cutter in their hardware section to cut the cable and chains there... they also have bolt cutters for the same purpose. When you bring something into the store from the outside just show it to the "guard" or customer service and they give you a sticker so you can leave with it again :-)
Once in there, just use their bolt cutter... I doubt they would mind.
Next time, gadget! Next time!!
p.s. I'm not cheap... I'm just frugal