Stuck as in won't come off or stuck as in won't rotate, either? Sledging your hub won't do anything. If it DOES NOT rotate, sledging the drum will, but it takes 2 people. One to sledge the drum at the locations of shoe contact, and the other person standing on the 6 foot spud bar between the studs trying to rotate the drum. Install your spindle nut and snug it before trying to rotate it. For a one man job, you can use a wrecking bar (or equivalent) between the studs and put a floor jack under it to achieve the same effect. If it still won't rotate and you have a cutting torch available, evenly heat the entire outer surface while under tension. It will have to get pretty hot to pop, though! If your shoes are rusted to the drum, the expansion of the drum from the heat will cause it to break free of the brake lining. Let it cool to ambient temperature before you do anything else, or you'll warp it, though
If it DOES rotate, then there is a ridge on the drum that you'll have to get it past. (As Baldeagle mentioned) The star wheel just rides against the spring, so it may feel like there are no teeth in it. Get a light and look inside to see what you can see. Reference the position of the wheel, try to move it and look again to see if it has moved. If it moves, keep moving it until you can see that the threads are either appearing or disappearing. (You want them to disappear) Most likely the threads will be rusted and if it does turn, it will only collapse so far.
If it's rotating and you cannot get the adjuster to release, then get the puller. Remove the spindle nut. Sledge the drum while you have it under puller tension. (It helps to put a jack under the hub to maintain the proper height to avoid binding. If you still can't get anywhere, release the tension and cut the heads off of the hold down pins and try again.
