You can use a big c-clamp as well. I would find a washer just big enough to slide over the kickstand and slide it on up to that circular plate, then use a clamp (or find a buddy with the adjustable wrench, don't hacksaw your dang frame. terrible idea) to push that washer in and with a free hand use needlenose pliers to pull the pin out. The washer helps but it sounds like you may have to be creative with the rest.