Originally Posted by cmonk
Anyone have any ideas on how to remove the post from the frame?
As already mentioned, first put the saddle back on the post. If you care much about the saddle you took off, you might use a junker saddle instead. The method I've used successfully in these cases is to put a junk saddle on and use hammer blows to the nose of the saddle, first one side and then the other. This has always worked for me, but it's clear from reading many posts regarding BADLY stuck posts that I've been fortunate and not had to deal with a really bad case. The source of the problem is more than likely galvanic corrosion, which is usually a result of an aluminum post in a steel frame, particularly one where grease wasn't applied when the post was inserted. Regardless, if the hammer-on-nose-of-saddle method doesn't work, here's Sheldon's article on the subject:
http://www.sheldonbrown.com/stuck-seatposts.html