Seized Drum Brake

Thanks for all the great feedback, guys.
Had a small amount of time to work on it this morning. Star wheel still wasn't going to budge. Let a few expletives fly why swinging the hammer at it.

So I got the grinder out and cut off the two little pins in the back. That seemed to really free it up and was hopeful that everything was going to come out with the drum. But there is still something holding it in: feels like it may be towards the top?

What else might be fighting me besides those two pins? Remember, I am a brake drum novice. It's entirely possible (or likely) that I've skipped something easy or obvious. :)