What I did was take a socket that was big enough to allow the head of the bolt to pass through it and put it over the head and into a vice. Then I used the vice to crank down on the broken end of the bolt, but the pressure would be on the socket and not the bolt head- allowing the bolt to be pushed out. Probably making sound way more complicated than it was, but it actually came to me in a dream. I realized i could have just bought a replacement but I just so happened to have the PERFECT matching bolt so it all worked out. To make sure the bolt was in tight I did the same process but switched the socket to the other side.How did you manage to get it out? Looks like it is pushed in harder than on a traditional truck.
Luckily my kingpin hasn't broken yet but definitely worries me when doing grinds.