Thanks to OP and the other commenters in this thread. Did my rear DS wheel bearing this weekend and this made it pretty straightforward (or, would have...)
Like some other poor rust belt saps, removing the original hub assembly from the knuckle was a complete PITA. They were basically fused together with rust. First, I tried using a 3 arm puller to separate them - total failure. The arms on the puller actually started bending rather than pulling the hub off.
After that, I switched to a 5lb slide hammer. This worked pretty quickly (or so I thought)... except it actually separated the front and rear halves of the bearing assembly, leaving the rear half seized to the knuckle/backing plate.
Once that happened, my last resort was to remove the entire e-brake assembly, and use a combination of a torch + 8lb sledge to beat the shit out of the assembly until it finally cracked loose. Hallelujah!
Installation was pretty easy, and I used this excellent guide to reassemble the brake assembly and get that working properly again. I used a Detroit Axle unit (~ $45) and it seems great so far - nice and quiet and no ABS light.
Think I'll take it a shop for the right side...