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I would love to try this, but I need a little help here...
"If you find any upright surface (wall, pole, tree, post, whatever), where you can lean your rear wheel..." - OK, with you to this point - let's assume a light pole.
"...such that the wheel surface touches at a point above and below..." - needs to be touching at two points on the pole? This, by definition, puts the wheel (and thus the bike) it in a vertical, unstable alignment.
"...the horizontal diameter..." - of what?
I really want to use this technique - please help me wrap my apparently slow wits around what is going on here. Any illustrations?