Brian, Any spindle that I have ever removed just pushed out the front of the casting. It can be kind of hard to get it moving, but once it starts it usually pushes out fairly easily. Make sure you haven't missed any set screws. There is usually one on the bull gear....sometimes you might find another one somewhere else. I've always used a dead blow hammer to get it moving, but if your using the puller setup I would think you would want to use something that doesn't give. I would replace the wooden blocks with steel. You want it to pop free. Lube it up real well and let it sit with pressure on it and it will probably break free. I'm sure you'll get it out one way or another.
Chuck