Heck, for posterity let's post that information here:
- Place jack under axle and put some pressure on it, but don't fully lift the wheel.
- Only JUST crack the nuts.
- Jack the wheel up until it is off the ground. Use a good jack stand or cribbing to hold the axle.
- Loosen the nuts so there's about 1/16" between the wedges and the nut. While standing aside give the wedges a couple taps with a hammer. It usually doesn't take much to free them. Without the nut on the stud the wedges can fly off and do some real damage.
- Once ALL the wedges are freely hanging you can loosen off the nuts.
- Now everything is pretty safe. Remove the rim.
There are plenty of youtube videos on how to true the tires when putting them back on. Here's the first result I encountered when searching:
That guy had more problems truing then I ever have.
When truing I usually use whatever is lying around. You don't need something tall either. A can of soup placed on the ground right up against the sidewall does just fine.
Also, page 2 of this document from Webb shows the tightening sequence and torque for Webb hubs, which are quite common.