Front caliper help please

First off I feel like a jackoff for having to ask this.I am trying to get the calipers off my 99gt but I am having problems.I loosened the two caliper bolts with little effort but the god damn things will not come out.They just keep spinning and spinning and---the bolt isnt moving just spinning.I been changing brakes on my cars for 15 years and never had problems.So what am I doing wrong?Please help.

I got it figured out.The bolts are bolted into a metal pin (for lack of a better term)that slides into the caliper bracket.Seems lika a strange design but I guess it works.Thanks for the help