[jQuery] Remove plugin from an element?

Is there a way to remove a plugin from an element? Lets say I have
plugin called foo. I attach it to all inputs.
$("input").foo()
Later I need a way to detach foo() from some input elements. One way
would be to have conditionals inside foo code. However I would prefer
detaching plugin for good.
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Mika Tuupola
http://www.appelsiini.net/