10 Bolt Rear End Question

[1950 GMC]

I’m in need of your help with my 10 bolt rear end. Today I tried to take out the axles by removing the 8 mm bolt that holds the pin in the middle of the spider gears. A course with my luck the damn bolt was broke ¾ of the way in. With my limited knowledge I tried to drill a hole in the broke bolt and use a counter sink to pull it out. Well I had no luck with that but I did accomplish screwing up the threads yeah me. LOL… There is no way of pulling the center gears out as the axles are still in the rear end. So what do I do from here? I need your help.