There was a thread on renoving this pin. But I'll shoe you some pic here. The first one shows the pin. However, it has already been pulled a little bit. usually you would just see about 1/4 inch of the pin or less.
This is how its done. Grip the stub of the pin that is sticking out with some vice grips, collapsing it a little bit. Slide a lever under the vice grip and wiggling the vicegrip left to right, apply some pressure with the lever. The pin should move up a tad. Reposition the vicegrip and do it again. Quickly, you will have the pin removed.