Seal was leaking... There was a puddle under the diff housing and the housing always had a drip getting ready to drop. I used a 3 jaw puller to remove the flange. I tried to pry it off for about 33 seconds then stopped being obtuse and grabbed the puller and it came off easy. I don't know if the bearing spacer is crush or solid. I did not check torque. The advice I found here on MUD was to count the number of turns it took to remove the flange nut. I reinstalled the nut with the same number of turns, 8 2/3 in my case. My arms indicate the torque was every bit of 180 ft lbs on that last 1/4 turn of the nut.
Good luck! Please share your experience