Kempe, now that the ring gear is off there should be a gap behind the boss, and it might be wide enough for the jaws of a puller. If you put plenty of penetrant on the joint between the boss and the shaft, and leave it at least overnight, before you try the puller, it may come off fairly easily.
It is odd that the end of your axle shaft shows hacksaw marks, since the axle was lathe-turned. There may have been foul play somewhere along the line.
