[murphyv310]

Hi.
The way I have always removed crank pulley bolts is to use a good socket and bar then jam the end on a suitable part of the chassis and jag the starter a couple of times, check its loosened and if necessary do it again. Its never failed once and that includes all sorts of vehicles even those using stretch bolts like the VW T4 1.9TD van that is so so tight.

I do like the OP's way of thinking and yes it is great if for whatever reason you cannot use the starter. I like the reference to torsion bars, they don't bend though they twist, they are just an un-coiled coil spring!