Looks like you are trying to save time and in the end it is costing you time. Do it right. Take the radiator out and then drill the center of the broker bolts. Drill with a very small drill first. Then open the hole with a little bigger drill. Lastly use the easy-out to remove the broken bolts.
This time use a good hardened bolt to secure the balancer to the remover tool. If you do it the other way, you have a better that 60-40 chance of destroying the balancer and having to purchase a new one. Slow down, take a deep breath, and do it right the first time.