you just got to trun and twist till it gets free. most of the trucks i have worked on, the starter comes out when you pull it back and then stand it strate up and then drop it strate down by the frame.
check in the yellow pages for a place that rebuilds starters and alts. a lot of the times you can get one fixed or replaced there cheaper than a auto parts store.I have one shop here, its a one man shop. he carrys the populer parts a lot of the time he can rebuild it and make it better than when it came from the factory.