Jon,
No chain whip required...
take two pieces of 2x4, file out a 1/2 circle the diameter of the hub shell in the narrow aspect so that you make a sandwhich when placed together (wood, hub, wood) with just a bit of space between the wood pieces.
Clamp in a vice.
Use a splined free wheel tool (sachs or old shimano hyperglide) and a large adjustable wrench to spin off the freewheel.
cheers,
rody