Tony , I don't have an impact gun either , so I got a piece of flat strap , about 1" x 1/8" , drilled 2 holes just the same as the 2 in the yoke , bolted the strap to the yoke and let the end of the strap touch the ground.
Then I got the 1/2 drive swimg bar , socket attached and on the pinion nut and used a small bottle jack to crank the nut undone .
Not so easy , but very achievable.
Maybe just a length of pipe on the swing bar if you have the space.
