So I've been searching and so far I've seen the wire trick. Is that the only way to achieve S-off or is there another (simpler) approach?
Wire trick is the best and safest method to use! There's another another method (though I'm not 100% sure if it works with EVO v, but it's a lot more risky and involves bricking the device. It's not for the faint of heart.
For the wire trick, follow this guide and you should be golden: http://androidforums.com/evo-v-4g-all-things-root/695161-s-off-root-fix-everything-all-in-one.html
For more information on the other method, see here: http://forum.xda-developers.com/showthread.php?t=1547695
