Broken spindle Husqvarna zero turn

So I have a broken spindle on the mower. Problem is I need to get the pulley off in order to change it, but when the spindle broke the blade fell off and the bolt broke inside of it. There is no way to grip it to be able to pull the pulley bolt off. The whole inside of the spindle just keeps spinning. How do I fix this? There's absolutely nothing to grip onto