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I think the problem here, on both the quantum and macro levels, is one of epistemology rather than one of metaphysics. It's not that the electron doesn't have a definite orientation in space; it's just that we can't know it (or, perhaps, that there aren't really electrons, I suppose). Same thing with the card. It's not that it's not definitely the nine of diamonds, it's just that we don't know it.
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That doesn't work. Fire an electron toward a wall with two slits.
The electron seems to go through _both_ slits and the electron going through the right slit and the electron going through the left slit interfere.
When they hit the photoplate you place beyond the two slits, they form a pretty interferance pattern. Dispite the fact you only fired 1 electron at a time...
I'm a many-universes QMer myself.
It isn't the act of observing that causes QM wave collapse, observing just happens to make the observer and all but one of the observed states rotate to right angles of each other, no longer able to interact.
In any case, when you play with large-scale experiments, usually QM effects get removed by the large number of observer-like actions. So, under almost every interpritation of QM that I know of (all 3 of them, and I only know 'pop-sci' level), that card will be a 9 of hearts, not a "any card of any card"...
Hope at least some of that makes sense. =/