Remove/reset CSS behavior property

Is it possible to remove the IE-specific behavior CSS property via a more specific rule or the !important declaration? Example:

.a-rule
{
  behavior: url(/some.htc);
}
.a-rule.more-specific
{
  behavior: /*no HTC*/
}

I realize that overriding CSS properties is undesirable, but I'm stuck here.

On Edit: I'm not sure where people are getting confused about this question. For all purposes, you can consider this already being an IE specific stylesheet. I'm asking how, if .a-rule above exists and is immutable, how can one remove the behavior via a more specific rule? A standard CSS equivalent would be:

.a-rule
{
  border: 1px solid black;
}
.a-rule.more-specific
{
  border: 0 none;
}

One can reset the border property for a subset of elements via a more specific rule. I'm asking how to reset the behavior property in an analogous way.

Answers

The default value is "none". See:

What is the *correct* way to unset the behavior property in CSS?

The solution:

.a-rule
{
  behavior: url(/some.htc);
}
.a-rule.more-specific
{
  behavior: none;
}

.a_rule {
  border: 1px solid black; /* we know border is black */
  behavior: url(/some.htc) /* we know something happen inside some.htc */
}
 .a_rule.more-specific {
  border: 0 none; /* we remove the border */
  behavior: url(/some.htc) /* we remove something inside some.htc */
}

use different .htc file

Maybe use conditional tags for IE in your head

<!--[if IE]>
<style type="text/css">
    .a-rule {
       behavior: url(/some.htc);
    }
</style>
<![endif]-->

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